Spider bite necrosis pictures. Investigating Spider Bite Necrosis: Comprehensive Overview with Detailed Visuals

30.06.197220.08.2021 by alexxlab

What are the common signs of a dangerous spider bite? How can you tell if a lesion is from a spider or another type of bug or infection? Get the answers to these questions and more in this detailed article.

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Exploring the Gallery of Dangerous Spider Bite Photos

It’s easy to look at pictures of red, bumpy lesions on the internet—that other people have tagged as spider bites—and think, “that’s what I have!” The problem is that many images are misidentified as spider bites by websites, patients, and even doctors.

The lesions might be from spiders, but they can also be from other types of bugs or infections. The pictures below show different types of lesions that are often identified as spider bites. Each one is discussed on how it could—or could not—be from a spider.

The Two Medically Significant Spider Species in North America

There are only two medically significant spider species in North America: the black widow and the brown recluse.

Black widow bites, for example, are very difficult to diagnose by looking at the site of the bite, unless it includes fang marks (see below). It’s easier to say definitively when a lesion is not a brown recluse bite than when it is.

Bottom line: Without catching a spider in the act, there might not be an accurate diagnosis. Nevertheless, whether it’s a spider or another kind of bug bite, treatment is generally the same.

Understanding Expanding Lesions

An expanding lesion, like the one in the picture, is common in brown recluse bites, but there are many other possibilities to consider. Some skin infections can lead to lesions like this. The only way to tell for sure is to have it evaluated by a medical professional.

Identifying the Bullseye Pattern

One of the things that set bites apart—whether from spiders or other bugs— from infections is the “bullseye” pattern of discoloration. It shows up as concentric rings of discoloration.

It’s common in tick bites, especially those that later turn into Lyme disease, and can also be present for spiders. Ticks, scorpions, and spiders are all arachnids.

Recognizing Fang Marks

Black widows have fangs, almost like miniature snakes. Soon after a black widow spider bites you—before any reaction starts—you might be able to see two small holes like those in this image.

Black widow venom can cause muscle spasms and heart disturbances, but if you have a black widow spider bite, rest assured that they are rarely fatal. The most common symptoms after a bite (besides the pain of the bite itself) are:

Abdominal pain
Muscle cramps/soreness
Soreness and redness around the bite
Irritability/agitation

High blood pressure is also common from black widow spider bites, although it rarely causes any problems for the patient. Most of the symptoms are treated individually. An antivenin (spider poison antidote) is available for black widow spider venom, but it’s not really necessary for most patients.

Examining the Classic Recluse Spider Bite

Brown recluse bites can go unnoticed, or they can lead to severe pain 2 to 8 hours after the bite. In some cases, patients report feeling a “pinprick” at the site of the spider bite.

In true cases of loxoscelism (medical terminology for the condition caused by brown recluse bites), skin tissue that develops could take several months to fully heal and the scars may remain. Generally, brown recluse bites are much less likely to cause significant injury than black widows.

Recognizing When a Spider Bite Might Not Be a Bite

It’s nearly impossible to say for sure if a spider bite comes from a brown recluse without the use of a lab test. However, there are some telltale signs that can be used to rule out the possibility of a brown recluse bite.

Signs It’s Not a Recluse Bite:

NOT RECLUSE is an acronym for the signs that a wound or lesion is not caused by a brown recluse bite. It stands for:

Numerous
Occurrence
Timing
Red center
Chronic
Large
Ulcerates too early
Swollen
Exudes moisture

The presence of any of these is an indicator that the wound isn’t from a brown recluse. The presence of two or more of these signs almost guarantees that it’s not.

Considering the Bite Setting

In order to be a brown recluse bite, the way the bite happened is very important to the story. If the bite occurred because the patient disturbed a spider by moving old boxes in the attic, that’s much more likely than getting a bite in the yard.

Recluse spiders have that name for a reason; they don’t like crowds. They hide in really out of the way, dark places.

Bad luck in the backyard, for example, could be due to poison ivy or spiders. It could also be a result of chiggers, which like to get into boots and socks to bite their prey.

When it happens matters, too. If a bite doesn’t happen from April to October, the chance that it’s from a brown recluse is much lower.

Gallery of Dangerous Spider Bite Photos

It’s easy to look at pictures of red, bumpy lesions on the internet—that other people have tagged as spider bites—and think, “that’s what I have!” The problem is that many images are misidentified as spider bites by websites, patients, and even doctors.

There are only two medically significant spider species in North America: the black widow and the brown recluse.

Bottom line: Without catching a spider in the act, there might not be an accurate diagnosis. Nevertheless, whether it’s a spider or another kind of bug bite, treatment is generally the same.

Expanding Lesions

Chad Warren

Bullseyes

Jake from Atlanta

One of the things that set bites apart—whether from spiders or other bugs— from infections is the “bullseye” pattern of discoloration. It shows up as concentric rings of discoloration.

It’s common in tick bites, especially those that later turn into Lyme disease, and can also be present for spiders. Ticks, scorpions, and spiders are all arachnids.

Fang Marks

Exodog

Black widows have fangs, almost like miniature snakes. Soon after a black widow spider bites you—before any reaction starts—you might be able to see two small holes like those in this image.

Abdominal pain
Muscle cramps/soreness
Soreness and redness around the bite
Irritability/agitation

Classic Recluse Spider Bite

CDC

Brown recluse bites can go unnoticed, or they can lead to severe pain 2 to 8 hours after the bite. In some cases, patients report feeling a “pinprick” at the site of the spider bite.

Your Spider Bite Might Not Be a Bite

Signs It’s Not a Recluse Bite

NOT RECLUSE is an acronym for the signs that a wound or lesion is not caused by a brown recluse bite. It stands for:

Numerous
Occurrence
Timing
Red center
Chronic
Large
Ulcerates too early
Swollen
Exudes moisture

The presence of any of these is an indicator that the wound isn’t from a brown recluse. The presence of two or more of these signs almost guarantees that it’s not. Let’s take a look at each one.

Lots of Lesions Are Not Spider Bites

T. Critchley

Multiple bites are not typically from spiders, especially not a brown recluse or black widow. In cases with so many bites, consider bugs that travel in groups, like mosquitoes, bedbugs, or chiggers, for example.

Bite Setting Makes a Difference

Recluse spiders have that name for a reason; they don’t like crowds. They hide in really out of the way, dark places.

Bad luck in the backyard, for example, could be due to poison ivy or spiders. It could also be a result of chiggers, which like to get into boots and socks to bite their prey.

When it happens matters, too. If a bite doesn’t happen from April to October, the chance that it’s from a brown recluse is slim to none. Brown recluses are notoriously inactive during the rest of the year.

Red, Inflamed Centers Point to Infection

Danielle from Binghamton, NY

A red, inflamed center is not an indicator of a brown recluse bite. Loxoscelism (brown recluse envenomation) is known for having a dark, flat center.

A swollen, hot area can easily be a staph infection. There is a possibility that it’s a bug bite, but skin infections are even more likely. Lest you think that staph infections can be the result of a spider bite, it’s probably not the case.

At least one study found that spiders do not regularly carry bacterial infections.

Long Time to Heal

Angela Phillips

If it takes a really long time for the lesion to heal, it might not be a brown recluse bite. They’ve got a reputation for lasting a while, but most brown recluse bites heal within three weeks and the biggest of them heal within three months.

A line drawn around the lesion, as shown in the picture, is a common method for keeping track of an expanding rash or area of swelling. Be sure to note the time and date when a line is drawn to know how fast the lesion expands.

Massive Sores

Ivonne H.

Brown recluse bites are known for having necrosis (dead tissue) in the center of the lesion. However, the necrosis is not going to be bigger than 10 centimeters across (four inches).

A lot of infected sores are identified—even diagnosed—as spider bites. In truth, unless you have a spider to identify as the culprit, the odds are against a spider bite. It’s much more likely that a non-spider bug did the biting in this case.

If the lesion grows or continues to get worse over a 24 hour period, it’s worth taking a trip to see the doctor. If not, it’s probably fine just to keep it clean and keep an eye on it.

Ulceration

Nick from Alabama

A brown recluse bite will eventually break the skin (ulcerate), but if it happens before the week is out, it’s probably not a brown recluse. Sometimes, it’s not really obvious that the lesion ulcerated, other than the fact that it develops a crust.

So, if it’s bleeding or crusty and it hasn’t been a week, it’s probably something other than a brown recluse bite.

Swelling

CDC

Swelling typically indicates something other than a brown recluse bite. Below the neck, brown recluse bites do not result in significant swelling. Above the neck is a different story. Bites on the eyelids and other very soft tissues of the face often swell after a recluse bite.

Any bug bite can lead to swelling from an allergic reaction or envenomation.

Oozing

Brown recluse bites are known for being dry in the center. If it’s oozing pus or moisture, it’s very unlikely to be a brown recluse bite.

Spider Bites: Overview and More

Let’s get this out of the way: That red bump is probably not a spider bite. Odds are, it’s a skin infection. The most common bacterial infections are either Staphylococcus aureus or Streptococcus pyogenes. Both of those create red bumps that get hot, swollen, and spread out.

If it is a spider bite and you got it in the United States, it’s very unlikely that you will die from it. Of all the spiders in North America, only two are medically significant (capable of actually making you sick): the black widow and the brown recluse.

Illustration by Joshua Seong. © Verywell, 2017.

Spider Bite Symptoms

If you didn’t see the spider bite you, then the chance that it’s an actual spider bite is pretty slim. It’s almost impossible to identify a spider bite just by how it looks.

Local reactions to bites from all kinds of toxic bugs look the same: redness, swelling, itching, and pain. Be concerned if a local reaction continues to get worse for more than 24 hours. Look for redness spreading away from the bite, drainage from the bite, increase in pain, numbness/tingling, or a discoloration around the bite that looks like a halo or a bullseye.

Black Widow Spider Bites

In the United States, black widow spiders are considered the most venomous. They have a toxin capable of a systemic reaction that affects muscle and nerve function. Black widow spider bite symptoms can be used to diagnose these bites and include:

“Fang” marks (tiny twin holes): telltale signs that are only visible right after the bite happens, before any swelling or redness occurs
Sweating
Chills
Headache
Dizziness
Muscular cramps (legs, stomach, etc.)
Rapid pulse
Exhaustion

Other countries have a widow spider called the redback spider. It’s a good idea to consider any shiny black spider with a red mark to be in the widow family. Another type of widow spider, the brown widow, generally has a weaker toxin and can be found worldwide.

Black Widow spider bite on foot.

DermNet / CC BY-NC-ND

Brown Recluse Spider Bites

Despite the terrible wounds often associated with brown recluse, they are much less likely to cause significant injury than black widows. Skin infections may cause boils, which are often misdiagnosed as brown recluse spider bites (take a look at spider bite pictures to help you tell the difference).

It’s easier to figure out when a bite is not from a recluse than when it is. One tool to rule out brown recluse bites is to use the mnemonic NOT RECLUSE. This mnemonic helps point out things that are not present in brown recluse bites.

Numerous: If there are more lesions than just one or two, they’re not from a brown recluse. Brown recluse bites come in ones and sometimes two.
Occurrence: The way that a brown recluse bite usually occurs is through disturbing the spider. Most of the time it’s hidden away in a closet or an attic, possibly in boxes. Occasionally, the spider can find its way into the bed and bite the patient in his or her sleep. If the occurrence was during gardening, it’s probably not a brown recluse bite.
Timing: If the bite didn’t show up from April to October, it’s very unlikely that it’s a brown recluse bite.
Red center: Brown recluse bites are almost never red and inflamed in the center of the lesion. Usually, they’re pale, blue, or purple. They can be red around the periphery, but if it’s red in the center, it’s probably not a brown recluse.
Chronic: It takes 3 weeks for a small bite to heal or 3 months for a bigger bite.
Large: The biggest recluse lesions (the tissue that’s dying) have been documented to be smaller than 10 centimeters across (four inches). They can be red and swollen well past that area, but the necrosis won’t be any bigger.
Ulcerates too early: For non-medical folks, this one might be hard to remember. Brown recluse bites take at least a week to ulcerate (break the skin and crust over). If it’s crusty before seven days, it’s probably not a brown recluse bite.
Swollen: Brown recluse bites are flat or sunken in the middle, not swollen. If it’s swollen (especially if it’s red), it’s not a brown recluse. The exceptions to this rule are bites on the face, especially the eyelids. Those swell significantly.
Exudes moisture: Brown recluse bites are dry, not moist. If it has pus oozing out of it, it’s an infection rather than a spider bite.

Brown recluse spiders are only found in the Southeast United States and are very difficult to identify, even by trained arachnologists. There are several other species of recluse spider that are similar but less studied than the brown recluse. Brown recluse spiders are often described as having a violin-shaped mark on the back of their midsections, but that mark can be inconsistent and very faint.

Causes

Almost all spiders are venomous. That’s how they hunt. Most spiders are too small, or their venom too weak, to be dangerous to humans. Some spiders are pretty well-known and seem to get blamed for most of the spider bites out there, even though there’s no evidence to support that those lesions are even from spiders.

Black widow and brown recluse spider bites are those that are most likely to be medically significant in North America. There are more than 40,000 species of spider in the world. Here are some North American spiders that get a bad rap without much evidence to support their reputations:

Hobo Spiders (Tegenaria agrestis): These guys were introduced into the Northwest United States from Europe in the 1980s. Since then, they’ve been blamed for instances of necrotic arachnidism, medical jargon for tissue death by spider envenomation. A study published in the Journal of Medical Entomology in 2011 found no medical significance from hobo spider envenomation.
Wolf Spiders (Lycosidae): Originally from Australia, wolf spiders are commonly thought to be very dangerous. On the contrary, case presentations of presumed wolf spider bites in the United States have reported nothing significant. A study of 45 definite wolf spider bites in Australia showed that they “cause minor effects, no more severe than most other spiders.” Wolf spiders didn’t cause necrosis-like the brown recluse and most of the damage was mechanical, not from venom.

Other parts of the world have much more dangerous species than the United States. Australia has the redback spider (similar to a black widow), white tail spiders, and deadly funnel-web spiders.

Diagnosis

Determining whether a bite is from a spider may be impossible. Patients rarely bring the brown recluse spider to an expert, which is required for a proper diagnosis. Black widow bites are often identified only by symptoms of its venom, without any visible local bite.

Call a doctor or go to the emergency department if your spider bite symptoms persist more than 24 hours or get worse, or if you think it’s a brown recluse or black widow. You should also call a doctor if you are not up to date on your tetanus vaccination.

If you go to the doctor for a reaction, don’t start out by telling him or her it’s a spider bite—even if you think that’s what it is. Doctors are people, too, and they are susceptible to the power of suggestion just like the rest of us. Instead, tell the doctor, “I have this rash (bump, boil, red spot, black spot, etc.) and I was wondering if you could tell me what it is and what I can do for it.”

Plenty of skin rashes and sores get diagnosed in the emergency department as spider bites, but the reality is that most are not. One case study of an outbreak of bites in military barracks—at least what authorities thought were bites—turned out to be MRSA. All the more reason to be skeptical of a diagnosis of spider bite in the emergency department.

Skin boils from infections are often mistaken for spider bites in the United States, even by doctors.

Treatment

You can treat all bug bites the same unless it’s a brown recluse or a black widow bite. Some articles on the internet tell you to treat venomous spider bites differently than non-venomous bites, but as you’ll see, there’s no such thing as a non-venomous spider bite.

There are many home remedies for treating insect and spider bites, but do they help? Most of these have not been shown to provide any real benefit. Meat tenderizer (papain) has even been implicated in allergies and asthma reactions to its protein. Suction syringes that are sold to extract toxins do not work and are a complete waste of money.

Allergic Reactions to Spider Bites

Anaphylaxis is always the biggest concern with any type of bug bite. If the victim exhibits any signs of allergic reaction or anaphylaxis shortly after a bug bite, call 911. Other symptoms can include:

Seek medical treatment if symptoms appear in parts of the body away from the bite.

Frequently Asked Questions

How do you treat spider bites?
To help relieve pain, swelling, or itchiness, try the following:
- Clean the bite with soap and warm water.
- Apply a cold washcloth or ice pack.
- For itching, take an over-the-counter antihistamine, such as Benadryl (diphenhydramine) or Zyrtec (cetirizine).
- For pain or swelling, try over-the-counter pain medicine, such as Tylenol (acetaminophen) or Advil (ibuprofen).
Seek immediate medical care if symptoms are severe or get worse.
How long do spider bites last?
For non-dangerous spider bites, the pain and swelling last about one to two days. A brown recluse spider bite usually heals within eight weeks. For black widow bites, your symptoms will typically get better in two days and disappear in five days, but you may notice mild symptoms for weeks.
What spider bites cause blisters?
Brown recluse spider bites can cause a blister that’s surrounded by either a bruise or reddish skin around the outside. A hobo spider bite can cause blisters with pus.

Brown Recluse Spider Bite | Michigan Medicine

Topic Overview

What is a brown recluse spider?

Brown recluse, violin, or fiddleback ( Loxosceles) spiders are about 0. 5 in. (1.3 cm) long with a dark violin-shaped mark on the combined head and midsection (cephalothorax). They are found most often in the south-central part of the United States and live in hot, dry, abandoned areas, such as wood or rock piles.

See a picture of a brown recluse spider.

What are the symptoms?

Brown recluse spider bites don’t always hurt right away. In fact, you may not know that you have been bitten until other symptoms appear. Symptoms of a brown recluse spider bite include:

Reddened skin that may be followed by a blister that forms at the bite site.
Mild to intense pain and itching for 2 to 8 hours following the bite.
An open sore (ulcer) with a breakdown of tissue (necrosis) that develops a week or more following the bite. This may take months to heal.

Some people have a severe, systemic (whole-body) reaction to brown recluse spider bites, including the rapid destruction of red blood cells and anemia (hemolytic anemia). Signs and symptoms include:

Fever and chills.
Skin rash all over the body with many tiny, flat purple and red spots.
Nausea or vomiting.
Joint pain.

What should I do if a brown recluse spider bites me?

If you think you have been bitten by a brown recluse spider:

Remain calm. Too much excitement or movement will increase the flow of venom into the blood.
Apply a cool, wet cloth to the bite, or cover the bite with a cloth and apply an ice bag.
Do not apply a tourniquet. It may cause more harm than benefit.
Try to positively identify the spider or catch it to confirm its type.

A brown recluse bite can be serious and may require immediate medical care. Call a doctor if:

You have severe symptoms throughout your body.
An open sore and necrosis develop. Necrosis is black, dead tissue.

How is a brown recluse spider bite diagnosed?

A brown recluse spider bite is diagnosed through a physical examination and questions about the bite. You should be prepared to describe the spider, where and when the bite took place, and what you were doing at the time. (If you are able to safely capture and transport the spider, bring it with you to show your doctor.) Your doctor will ask what your main symptoms are, when they began, and how they have developed, progressed, or changed since the bite.

How is it treated?

Medicine to counteract brown recluse spider venom is not available in the United States or Canada. Treatment depends on how severe the bite is. For bites that:

Do not develop open sores, treatment includes applying a cold compress, elevating the bite area, and avoiding moving the bite area.
Cause an open sore (ulcer) and dead skin (necrosis), treatment includes removing the dead skin from the sore. This may involve follow-up and replacing the dead skin with new skin (skin grafts).

Hyperbaric oxygen therapy
may also be used for tissue damage from a spider bite.

Medicines that may be used include:

Pain medicine, such as acetaminophen(Tylenol) or nonsteroidal anti-inflammatory drugs (NSAIDs). NSAIDs include naproxen (Aleve) and ibuprofen (Advil, Motrin). Be safe with medicines. Read and follow all instructions on the label. Do not give aspirin to anyone younger than 20 because of the risk of Reye syndrome.
Antihistamines, such as a nondrowsy one like loratadine (Claritin) or one that might make you sleepy like diphenhydramine (Benadryl), to relieve itching.
Antibiotics, if an infection is present.

Credits

Current as of:
February 26, 2020

Author: Healthwise Staff
Medical Review:
William H. Blahd Jr. MD, FACEP – Emergency Medicine
Adam Husney MD – Family Medicine
Kathleen Romito MD – Family Medicine
E. Gregory Thompson MD – Internal Medicine
H. Michael O’Connor MD – Emergency Medicine

Current as of: February 26, 2020

Author:
Healthwise Staff

Medical Review:William H. Blahd Jr. MD, FACEP – Emergency Medicine & Adam Husney MD – Family Medicine & Kathleen Romito MD – Family Medicine & E. Gregory Thompson MD – Internal Medicine & H. Michael O’Connor MD – Emergency Medicine

Necrotizing Fasciitis and Spider Bites

By Lydia A. Meyers RN, MSN, CWCN

In the times that I have worked with amazing hospitals and doctors, I have learned and gathered information on the differences between two types of necrotizing infections that happen in the world of wound care. Necrotizing fasciitis (NF) and spider bites can present as similar in nature and need immediate intervention.

NF will present as cellulitis and the inflammation will spread, whereas spider bites present with a red, white and blue sign. The patients will experience the following: fever, diarrhea, nausea, vomiting and pain. There are differences in the progression, treatment and use of antibiotics. In the following blog I will explain the differences and similarities of both conditions.

What is Necrotizing Fasciitis?

The CDC defines necrotizing fasciitis as a bacterial infection that spreads rapidly into the body’s soft tissues, destroying skin, subcutaneous fat and fascia. This is caused by more than one bacteria including group A Streptococcus, Klebsiella, Clostridium, E. coli, Staphylococcus aureus and Aeromonas hydrophila. The most common cause of NF is group A strep.

Though this is a rare occurrence, NF can be caused by a break in the skin related to a cut, scrape, burn, insect bite or puncture wound. Many of the people who do get this bacterial infection have lower immune systems and decreased ability to fight the invasion of bacteria.

There are three different types of NF. Type 1 is a combination of both anaerobic bacteria and aerobic bacteria. Some of the bacteria to include Clostridium and Bacteroides species. Type 2 is group A Streptococcus with or without staphylococcal infection, and type 3 is Vibrio infection related to marine animals or insects.

The infection spreads by inhibiting phagocytosis. These bacteria then utilize the immune system to spread through vessel walls. The conditions then allow the closing off the hypoxic conditions and the facultative aerobic organisms to grow and become anaerobic. The bacteria then start to breakdown surrounding cells and there is a release of carbon dioxide, water, hydrogen, nitrogen, hydrogen sulfide, and methane. As the toxins continue to spread throughout the bloodstream, the patient becomes septic. The toxins are noted to follow fascia, muscle compartments, or both.

The most common areas of infection are the abdominal wall, perineum, and extremities. When attacking the perineum and scrotum it is better known as Fournier gangrene. The most common causes are trauma, surgery, and insect bites. Comorbidities such as diabetes, chronic renal failure, immunosuppressive therapy, hypertension, obesity and malnutrition increase susceptibility. Patients often appear with symptoms of septicemia and generalized pain. The patient will often go into multi-organ system failure.

An emergency NF situation needs immediate IV antibiotics and multiple surgical debridement. The use of hyperbaric oxygen therapy (HBOT) can reduce the movement of the toxins into the fascia, muscle compartments and bloodstream. HBOT is effective in creating an oxygen filled environment that can stop the progression of the anaerobic bacteria. The use of dressings should be conservative until the bacteria is under control and then there should be reassessment of the wound for proper dressing.

Identifying Spider Bites

There are more than 3,500 spider species in the United States. Though not found in every state, the two types of spiders that can cause the most damage of all of the types are Black Widows and Brown Recluse.

The Brown Recluse: The brown recluse (Loxosceles reclusa) has a violin shape on its back. The bite can go unnoticed as it is painless. After a few hours, symptoms of pain, fever, malaise, headache, dark urine, and arthralgia may begin. The wound site will have burning sensation or some type of irritation. There will be severe pain, blistering with blue in the center, ringed by redness. There will be pimple-like lesions with yellow or green pus, or a rash that itches or ulceration with break in the skin or mucous membrane. You could have some of these symptoms or none of them, depending on the individual reaction to the bites.

The person who has the spider bite should go to the emergency room immediately. Medical treatment could include antibiotics, ice and elevation of the wound, antivenom, steroids, and antihistamines. If the wound becomes necrotic, then surgery will need to be done to clean out the wound bed. The wound dressing used will depend on the condition of the wound and the ability of the person to heal.

The Black Widow: The black widow (genus Latrodectus) is recognized by the bright red hourglass marking on the abdomen. The populations of greatest concern with regard to the bite from a black widow are the elderly, children and people with many comorbidities. The venom does have poison, but it is not necrotizing. Systemic reactions occur including headaches and abdominal pain. These symptoms will go away in 1 to 3 days. Treatments for a black widow bite includes ice, calcium gluconate and antivenom.

Patient Case Example: A patient was admitted to a facility for follow up wound care after hospitalization. The history and physical stated that the patient had been bitten by a spider and the patient reported that it had happened while she was sleeping. The doctor diagnosis for admission was necrotizing fasciitis. The wound was debrided several times during the admission. The tissue showed good granulation and undermining. The importance of the patient case should not have been placed on antibiotic therapy and repeated debridement, but on the closing of the wound.

Conclusion

It is important to assess the patient especially in the emergency room and/or admission to the hospital. The difference between necrotizing fasciitis and spider bites is the difference in how the wound will be treated from the beginning throughout the course of treatment in the hospital. The prompt assessment of NF is necessary, as any loss of time could endanger the patient’s life as well as increase the damage to the underlying tissues.

About the Author
Lydia Meyers RN, MSN, CWCN has been a certified wound care nurse for over 15 years with experience working in home healthcare, extended care facilities, hospice care, acute care, LTAC, and wound clinics. Her nursing philosophy to “heal wounds as quickly as possible” is the guiding force behind her educational pursuits, both as a teacher and a student.

The views and opinions expressed in this blog are solely those of the author, and do not represent the views of WoundSource, Kestrel Health Information, Inc., its affiliates, or subsidiary companies.

Poisonous Spiders in the Home: Pictures and Tips

In North America, three spiders, the brown recluse spider, the hobo spider, and the black widow spider (Latrodectus species) cause much of the fear of spiders so apparent in segments of the population.

Technically they are know as spiders of medical importance because their bites can be a cause of medical concern. Less formally they are known as poisonous spiders.

The brown recluse spider (Loxosceles reclusa), a resident of many Southeast and Midwest states, makes the human population in these areas wary of any brown spider they come across.

While they come in a variety of shades of brown, the violin marking on the cephalothorax serves as the best field identification clue. Additionally, the legs do not have bands.

The common name recluse is important. Like other spiders, they are typically an outdoor species that shy away from human contact. Problems typically arise when males wander indoors and a human inadvertently gets bitten.

In more severe cases, a brown recluse female establishes a nest within a house. Usually they are found in garages, crawlspaces, attics, wall voids and the like.

In these instances, a house can become infested. Females lay eggs in flattened egg sacs that are frequently attached to the underside of objects. Up to 40 spiderlings may hatch from a single egg sac. A single female may produce up to five egg sacs in a summer.

According to the Center for Disease Control (CDC):

The brown recluse spider cannot bite humans without some form of counter pressure, for example, through unintentional contact that traps the spider against the skin. Bites may cause a stinging sensation with localized pain. A small white blister usually develops at the site of the bite. The venom of a brown recluse can cause a severe lesion by destroying skin tissue (skin necrosis). This skin lesion will require professional medical attention.

Medical professions suggest that individuals concerned about the possibility of Brown Recluse bites, should attempt to capture the spider and bring it with them when they seek medical attention. Brown Recluse bites are rare. When they do occur, an article in the Annals of Emergency Medicine notes,

“In our series, long-term outcome after brown recluse spider bite was good. Serious complications were rare, as was the need for skin grafting. Because the vast majority of bites heal with supportive care alone, aggressive medical therapy does not appear warranted.”

See also: Reports of Presumptive Brown Recluse Spider Bites Reinforce Improbable Diagnosis in Regions of North America Where the Spider Is Not Endemic

Hobo Spider

The Hobo Spider (Tegenaria agrestis), a recently introduced species to the United States, coming from Europe to the Pacific Northwest also receives attention in the medical literature.

Often Hobo spiders get placed in the poisonous spiders category. The research on Hobo Spiders is incomplete, and no definitive answer regarding their level of danger exists. Common sense suggests that since the Hobo spider was never a spider of medical concern in Europe for hundreds of years, its introduction into the United States did not change the toxic level of its bite.

Still a spider bite is a spider bite and since they are in the home, there’s always reason for a bit of concern.

Most experts warn against using a picture for a definitive spider identification, including the Hobo Spider. Given that fact, the first picture in this shows a spider that has many of the Hobo Spider’s physical characteristics. There are no bands on the legs and the abdomen has a “v” pattern down the middle (the “v” is upside down in the picture).

The Hobo Spider belongs to the funnel web spider family (Agelenidae), and the two spinnerets extending from the bottom of the abdomen are characteristics of funnel web species. Like other funnel web spiders, they prefer the outdoors, and tend to come indoors during the late fall, as the season changes. Wandering males also are known to wander through the house.

Compare it to the second picture, the Giant House Spider. They are both Pacific Northwest species in the same genera. Giant House spiders can grow up to four inches in length (legs included).

Poisonous Spiders: Black Widow Spider

Most people refer to the species in the genus Latrodectus as black widow spiders or widow spiders. Along with the recluse spider and hobo spider, Latrodectus species are considered spiders of medical importance in the United States.

Using the language of spider talk, Latrodectus belong to the larger cobweb spider family, Theridiidae. Five Latrodectus species live in North America:

Latrodectus bishopi: Red Widow
Latrodectus geometricus: Brown Widow
Latrodectus hesperus: Western Black Widow
Latrodectus mactans: Southern Black Widow
Latrodectus variolus: Northern Black Widow

The bite of females contains a neurotoxin that can cause severe health problems, and at the extreme end, death.

Symptoms appear about an hour after the initial bite and can include nausea, shortness of breath and chest or abdominal pains. Anyone suspected of being bitten should immediately seek medical attention.

Latrodectus species typically live in and around residential areas, predominantly in the southern half of the United States, although the range of both the Northern and Western species extends into Canada. With legs extended, widow spiders can measure up to an inch and one-half in length. Any corner of a wood pile, basement or porch provides sufficient space for the female to build a tangled looking, untidy web.

The traditional description of female widows begins and ends with their dark black bodies and red hour glass marking on the underside of the abdomen.

Yellow Sac Spider

The Yellow Sac Spider or Longlegged Sac Spider (genus Cheiracanthium, family Miturgidae) fits one rung below the poisonous spiders category that is often reserved for the Black Widow, Hobo Spider and Brown Recluse spider.

Small in stature (less than one inch in length), their bite is known to cause immediate severe pain, followed by redness, swelling and itching. Current medical literature suggests necrosis is not a symptom of yellow sac spider bites. So, while their bites may be nasty, they are not known to produce medical complications.

Two different species live in the United States, C. inclusum, a native species found throughout most of the United States, and C. mildei, a European species with established populations in much of the Northeast and Northwest.

Both species share similar physical characteristics which are visible in the top picture. The body is a light color with little marking other than a light stripe on the abdomen and the front pair of legs are longer than the other three pair of legs.

Both species are also known to inhabit residential areas, which makes them candidates for wandering around the house or apartment.

A Man Shared Photos of Skin Healing After a Brown Recluse Spider Bite

THE INSIDER Summary:

A man who says he was bitten by a brown recluse spider posted photos on Imgur showing how his skin healed up after the bite.
In rare cases, brown recluse bites cause serious skin wounds that make some tissue die and turn black.
Warning: The photos are graphic — but they’re also kind of amazing.

Ever wonder what it looks like when you get bitten by one of the world’s most feared spiders? A gnarly photo series recently shared on Reddit will show you all the gory details.

In the photo series (originally posted on Imgur in 2016 but recently re-shared on the /r/popping subreddit), Redditor KilledTheCar showed how his skin healed after he was bitten by a brown recluse spider. It’s one of the few spider species in the U.S. that experts consider “medically important.”

Brown recluse bites in particular can cause what’s called a necrotic wound. That’s when parts of your tissue actually die and turn black.

And that’s exactly what happened to KilledTheCar. Scroll through his photo series and you’ll witness a healing saga for the ages: First the skin at the bite site looks crinkled and brown, then it starts to turn black and dry up. Next, an infection infuses the wound with pus, and finally — slowly — new skin starts to cover it up for good.

In the comments section of the new Reddit thread, KilledTheCar revealed that he was bitten in Mississippi (well within the brown recluse’s natural habitat) and that it felt like “just the tiniest little pin prick.”

He also wrote that he went to the ER about six hours after the bite because he was vomiting and experiencing chills. Eventually, a doctor suspected that it was likely a brown recluse bite based on the symptoms, KilledTheCar wrote.

It’s a terrifying story — but it’s important to put it in context. According to spider researchers at University of California Riverside, a full 90% of brown recluse bites are not “medically significant” and often heal up on their own. Plus, the brown recluse doesn’t travel far outside of its usual geographic range (see it on a map right here) and lots of other skin issues are often misdiagnosed as brown recluse bites. And finally, it wasn’t just a spider bite: KilledTheCar said tests revealed that his wound was infected with staph and pseudomonas bacteria to boot.

If you really want to see the photos, brace yourself and check out the entire album right here. It’s gross, to be sure— but it’s also a fascinating look at how the skin can heal up even after the nastiest injuries.

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Spider Bites

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Venomous Spiders in Texas

Texas has two venomous species of spiders, the black widow (Latrodectus mactans) and the brown recluse (Loxosceles reclusa). Both of these species of spiders can be found indoors and outdoors through out the State. The female black widow can be identified by its jet black color, globular abdomen with a reddish or yellowish hourglass on the underside. Male, black widow spiders are smaller, brown and nondescript. The black widow spider is aptly named because the female usually eats the male after mating. The venom of the black widow is a neurotoxin and can lead to severe systemic reactions and in rare cases, death. The black widow’s venom is reportedly 15 times more toxic than the venom of the prairie rattlesnake. However, only a minute quantity is injected with each bite. The most severe reactions occur in children and older adults. Black widow spiders can frequently be found in woodpiles, boxes, outdoor toilets, meter boxes, under eaves, and other undisturbed areas.

Brown recluse spiders are golden brown in color and can be identified by the characteristic dark brown to black fiddle-shaped pattern on the head region. Brown recluse venom has necrotizing enzymes that generally cause local or systemic reactions. These spiders commonly live in basements and garages of houses and can be found hiding between boards, boxes, and old towels and clothes in dark, undisturbed areas. Neither the black widow nor the brown recluse spiders are aggressive but they will both bite when accidentally trapped, disturbed or threatened.

Symptoms of Envenomization by Spiders

The severity of a victim’s reaction to any spider bite depends on the area of the body bitten, the amount of venom injected, depth of the bite, the victim’s age, and other factors. Additionally symptoms usually differ between black widow bite victims and brown recluse bite victims. Many times, the bite of a spider feels like a pin-prick and may not be noticed by the victim.

General Black Widow Spider Envenomization Symptoms

abdominal cramping
abdominal rigidity
convulsions
headache
lesion at site of bite
nausea
pain
profuse sweating
tremors
unconsciousness
vomiting

General Brown Recluse Spider Envenomization Symptoms

chills
fever
nausea
necrosis at the bite site
nothing
red white and blue lesion at the bite site
restlessness
weakness

First Aid for Spider Bite Victims

Antivenom is generally not prescribed for black widow envenomizations. Although an antivenom for the black widow is available, it has a high probability of an anaphylactic reaction and is used only in extreme cases. There is no effective antivenom available for brown recluse envenomization victims. All spider bites posses the potential for a secondary infection and should be washed thoroughly with soap and water or an antiseptic if available. If possible, the spider should be captured for positive identification. An Ice pack may be applied to alleviate pain and swelling in the bite area. First Aid is of limited help so you will need to contact the Texas Poison Center Network at 1-800-POISON-1 (1-800-222-1222) or your family physician for information about treatment. In severe cases, where the victim has systemic reactions, the victim may be hospitalized and the physician may administer cortisone-type hormones, muscle relaxants, or pain relievers.

Spider Bite Prevention

Prevention is the best treatment of all for spider bites. Several chemical and non-chemical controls are available for reducing the risk of being bitten by spiders in general.

Non-Chemical Spider Control

Eliminate or reduce bright outdoor lighting that attracts insects (spiders’ food supply).
Trim weeds and grass from around buildings and remove debris to discourage insects and spiders from living close by.
Seal or caulk outside openings that may allow spiders to enter the house.
Use a vacuum cleaner to remove spiders, webs, and egg sacs from inside the house.
Wear gloves and watch carefully when in areas where spiders are likely to live.
Shake out shoes, clothes, towels, linens, etc. which have been stored and undisturbed for long periods of time.

Chemical Spider Control

Have a professional apply a residual pesticide around the perimeter of the building. Over the counter pesticides are often not strong enough to effectively control spiders.
Contact pesticides may also be used indoors. However strict attention should be given to the manufacturer’s label and all warnings and precautions observed. It may be best to have a professional apply more effective pesticides approved for indoor use.

More Information

90,000 8 creatures that can ruin your vacation

Rambler / Travel tell about unpleasant creatures that it is better not to meet during your vacation, and gives a short educational program on how to escape if you are already in trouble.

Hermit spiders

One of the most dangerous spiders in the world (in terms of the power of poison it is comparable to a black widow) has several species. The worst of these are the brown recluse spiders that live in the United States, including Hawaii.A seemingly harmless spider can settle in a house or in an attic and will not attack a person until he is disturbed.

But if you anger an arthropod, it won’t seem like a little: from a spider bite, symptoms of a disease called loxoscellism appear. Nausea and fever are just flowers. From strong doses of poison, gangrene develops, and irreversible necrosis of skin tissue begins. Other hermit species (its scientific name is the loxosceles spider) live all over the world – from the Mediterranean to Australia.They are also poisonous, but their bites are no longer so scary.

How to be saved: carefully check clothes and shoes before use – it is unpleasant if an insect gets into them, and even more so if Loxosceles. Take a look around the room you live in during your vacation so that there are no cobwebs hanging over the bed and there are no old boxes in which spiders could make a nest. Be sure to wear gloves when carrying armfuls of firewood. If it was not possible to avoid the bite, apply ice to the damaged area and immobilize the limb.Call a doctor.

Lionfish

Lionfish (their other names are lion fish and zebra fish) are considered one of the most unusual creatures in the Indian Ocean. They have a bright color (bodies are painted with white stripes) and large fan-like fins that work as a good cover – sharp poisonous thorns are hidden in them. Lionfish fish do not want to prick anyone with these needles, using them as protection: if you come across a thorn, you can get an extremely unpleasant charge of poison under your skin.In some cases, its dose is insignificant, and the person experiences only an attack of pain. However, sometimes a meeting with a disheveled fish can result in paralysis of the skeletal and respiratory muscles, and then the swimmer suffocates and drowns.

How to be saved: Observe the lionfish from afar and do not disturb their peace. These 30-centimeter fish never attack first, taking a wait-and-see attitude until the last. When snorkeling or scuba diving, be careful: lionfish like to watch their prey, disguised as bright corals, and they can be difficult to notice at first glance.After running on a dangerous spike, see a doctor immediately.

Sea urchins

Everyone who looked at corals underwater has seen sea urchins. These thorny creatures like to nest on the sand among the stones, covered with a piece of shell. The main danger is represented by their needles – up to 30 centimeters long (some with monstrous notches), which dig into the legs of those who inadvertently stepped on hedgehogs under water. There were cases when these creatures literally “shot” their thorns at people passing by.In tropical species of hedgehogs, the needles are poisonous (fortunately, not fatal), but even without the poison, the thorn is guaranteed to poison the vacation. The affected foot swells, the person’s temperature rises, and the inflammatory process begins. It is extremely difficult to remove the thorn from the wound – the fragments can remain in the leg for several months until they dissolve.

How to escape: entire colonies of sea urchins live on the bottom of the Red and Mediterranean Seas, as well as off the coast of New Zealand, North and South America.Examine the bottom carefully when you enter the water (or vice versa – go ashore) and be especially vigilant when diving. Hedgehogs live mainly in rocks, so there are significantly fewer of them on sandy beaches. Rubber slippers can also save a hedgehog from a needle, although there have been cases when the thorns easily pierced the sole. The process of removing the needle from the wound is extremely painful, and you cannot do without the help of doctors. However, there are extremals who pull out the needles on their own: first, they hit the place where the thorn has fallen with a heavy object in order to crush it into small pieces, after which they fill the wound with lime juice, which dissolves the needles for several hours.

Jellyfish

It is believed that in tropical waters the box jellyfish (its other name is the sea wasp), as well as its merciless brother nicknamed “Portuguese boat” killed as many swimmers, divers and surfers as sharks crocodiles put together. Their stinging tentacles are deadly.

They contain millions of stinging cells that are shot at an incredible speed at the victim. At first, a person feels injections in different places, after which – a very sharp pain.Jellyfish bite scars can last a lifetime. These unpleasant creatures live mainly off the coast of Southeast Asia and Australia. Recently, the “boats” got into the habit of swimming on the beaches of Phuket.

How to escape: do not go into the water immediately after a storm – jellyfish (or just scraps of their tentacles, which can also be dangerous) are often washed ashore by a powerful wave. If you still did not manage to avoid meeting these creatures, then know that after a bite, in no case should you pull out the stings or rub the stung areas with a towel, as even more stinging capsules will discharge into the victim’s skin.While medical help is rushing to you (unfortunately, medicine is often powerless with a sea wasp bite), you can neutralize the effect of the poison with homemade vinegar or diluted acetic acid.

Mosquitoes

Stumbling across these feisty bloodsuckers on your beach vacation is easy. Mosquitoes live in the tropics and subtropics, adore warm and humid jungles, and happily pounce on people during meetings. Intrusive insects are carriers of many diseases – from mosquito fever (Africa, India and the Balkans) and bartonellosis (Peru, Ecuador, Colombia) to skin ulcers (Afghanistan, Brazil, Peru, Saudi Arabia and Iran).

How to Escape : Mosquito nets on the windows and insect bite creams and sprays are best friends when on holiday in the tropics. Before traveling to potentially dangerous countries – Venezuela, Bolivia, Brazil, Colombia, Ecuador and tropical sub-Saharan Africa – it is advisable to get vaccinated against hepatitis and yellow fever (in some countries the vaccination certificate is mandatory, in others it is advisory). On jungle excursions (such as hiking to Mount Roraima or rafting on the Amazon), wear long sleeves, pants, and boots with tight toes.

Ticks

These tiny arthropods, armed with claws and claws, live in many countries. Not all ticks are dangerous, but only those that are carriers of the tick-borne encephalitis virus. The bite of such a tick can be fatal: a person begins to have a fever, intoxication of the body begins, after which the spinal cord and brain are damaged.

How to be saved: Many have known for a long time that it is better not to travel to nature without a vaccination against encephalitis.If you are not vaccinated, vigilance will save you: carefully inspect your clothes and body during and after forest walks, keep to paths, use repellents (they should contain diethyltoluamide (DEET) or permethrin). If you are still attacked by a tick, try to remove it with twisting movements (the main thing is not to crush it; first you can strangle the insect by smearing the wound with oil), then go to the doctors along with the tick body so that doctors can determine whether it is encephalitic or not.

Midges

Wherever you spend your vacation – fishing in the Baltics or in the sweltering Brazilian tropics, in the forests of Scotland or Austria – be prepared for regular attacks by midges that inhabit all continents except Antarctica.

These tiny two-winged bloodsuckers love warmth and dampness, therefore they live in clouds near water bodies and in humid jungles. Midge bites cause a lot of trouble: the bitten place swells and itches terribly (the midge does not drink blood like mosquitoes, but gnaws a piece of flesh, which causes inflammation), allergic reactions are not uncommon.In addition, midges are carriers of dangerous diseases – for example, onchocerciasis, which causes eye damage (in African countries).

How to Escape: You will certainly need insect repellent ointments, lotions and aerosols. If you are not ashamed to walk with a mosquito net on your head (look for it in stores that sell paraphernalia for hiking) – use this method of protection, especially since it is considered one of the most effective. Try not to comb the bitten place; lubricate it with ammonia or baking soda solution.If the tumor grows, see your doctor.

Vipers

The family of vipers is large, but the poison of the common viper is considered the most dangerous for humans, which lives in many European countries (Italy, France, Switzerland, Greece, Bulgaria, Russia, Great Britain, etc.). When attacking, the viper relies on lightning speed and, if he misses, repeats the blow again. Finding out that the snake is about to attack is quite simple: before a series of attacks, the reptile settles down more comfortably, curling up into a ring.At the same time, the viper hisses and snorts quite loudly. Like most snakes, the viper does not attack a person first, but rather tries to crawl away as soon as possible, hearing the sound of approaching footsteps. An animal can only be pissed off by stepping on it or by severely frightening it. And then the viper will show everything that it is capable of. Without much distinguishing who is in front of her, the viper can inflict up to 30 blows without stopping. There were times when an angry viper gouged a stone or a thick branch lying in front of it, breaking its head into blood.

How to escape : if you see a viper, it is better to just leave, not getting close and in no way trying to provoke it. Although a viper bite is very rarely fatal, an affected person should seek immediate medical attention. If the hospital is far away and the way to the nearest doctor will take several hours, you need to suck the poison from the victim through the wound, first taking water into his mouth, and then carefully spitting it out. Keep in mind that there should be no sores in the mouth (and the teeth should not be damaged by caries), otherwise the poison can enter the body.When bitten, you need to drink more water, if possible – eat hot broth.

Why a bite is dangerous

What spiders bite and do they attack at all? If bitten by a spider that does not have a poisonous substance, then for a person it often does not lead to the development of adverse actions.

The outcome for the victim of the attack of a poisonous spider has no less pronounced signs. The consequences will depend on the flow and volume of venom injected by a particular type of spider.The danger comes from large individuals, since the poison they produce is enough to harm a person.

Dangerous consequences are allocated:

hematological effect, characteristic of the effect on the blood composition, is manifested by the death of damaged tissues, areas where the toxin has penetrated,
Most poisons act as a neurotoxin, affecting the nervous system, disrupting neuromuscular mechanisms. This method is often encountered among arthropods, designed to paralyze the victim.

Do house spiders bite? At home, spiders are often not a threat, they are small and almost invisible to humans. They bite in exceptional cases. Of the living spiders in the house, a hermit can be seen larger than the usual house dweller. The bite of such a domestic spider also does not threaten human health. However, when a spider bites, there is severe and unpleasant pain, swelling, and a feeling of malaise in adults and children. These manifestations go away quickly if you use a disinfectant, apply a cold compress.Unless children, adults are not allergic to the toxin.

Clinical signs of bites

Basically, arachnids are predators, as they introduce a paralyzing toxin. When in contact with a person, they behave in the same way, they have a protective barrier. Signs, if a spider has bitten an arm, a leg, develop in different ways, since they depend on the species of the individual.

An important fact is that an attack of even a poisonous arachnid may not cause pain, the victim may not understand that a puncture has occurred until he finds a red mark, mistaking it for an abrasion.

Karakurt is considered a dangerous individual. After being attacked by a black widow, a person experiences the following symptoms:

strong saliva secretion,
headache,
nervousness,
muscle cramps,
sweat separation,
goosebumps.

These symptoms persist for several days. Their manifestations are determined by the resistance of the organism. If assistance is not provided to the victim immediately, severe spasms will appear for a long time, there is respiratory arrest, death.

When faced with a tarantula, most are afraid of it, believing that its bite will lead to death. But this is a wrong assumption. The poison of an individual does not pose a threat to life, and death occurs in rare situations. The factor lies not in the toxin injected under the skin, but in the allergy to the substance. The bite of the tarantula is sore and a person develops rashes, twitching of the limbs is observed, the head is spinning, the pressure decreases and the legs and arms go numb. If there is an allergy, then Quincke’s edema and the development of anaphylactic shock are inevitable.

Arachnid hermit belongs to a dangerous species, and even people who have a strong physical body should beware of his attack. Spider bites are carried out imperceptibly, but the poisonous substance dissipates through the body quickly. What does a hermit spider bite look like? The cover of the skin swells, increases in size, and is strewn with ulcers. Without taking immediate action, tissue necrosis is observed. Further, the victim develops the following symptoms of poisoning:

heartbeat increases,
the temperature rises,
nausea, vomiting,
dizziness,
aching joint,
breathing is difficult.

The resulting ulcers heal badly and for a long time.

The bite of a tarantula spider is also poisonous, but does not threaten so as to cause serious harm. In this case, fatal cases of a bite are sometimes recorded. Certain species of tarantula spiders that are brought into homes today are completely harmless. Even when an arthropod bites the owner, it is out of fear, he does not introduce poison. The tarantula bite causes only pain, slight redness, which is eliminated by a disinfectant.

The bite of a spider-spider also does not lead to the death of the victim, while a mass of negative sensations may appear.A cross bite is manifested by the following symptoms:

apathy,
fatigue,
weakened,
burning,
swelling,
drowsiness,
twitching of the limbs,
chills,
diarrhea,
vomiting.

The penetrated poison leaves the wound a day later along with urine. The spider puncture is carried out by accident, only to protect yourself.

Features

Often there is no sensation after a spider bite, but it looks like a needle prick.Basically, the initial manifestations are observed after 10-15 minutes as a spot of a white, red hue. After 2 hours, clear signs of an arachnid attack develop. The stage of severity of signs will be predetermined by the type of arachnid and poisonous substance.

With a bite of a poisonous individual, the following symptoms develop:

red formations develop on the epithelium,
muscle breakage and pain,
hyperemia,
spasms,
in the area of the bite the appearance of blisters, wounds,
erosion, necrosis,
swelling of soft tissues,
increased sweating,
painful feelings in the abdomen,
flashes of suffocation,
numb, tingling limbs,
itching, burning sensation,
shortness of breath.

In the event of a critical injury to the central nervous system, the victim loses his mind. He has a lot of saliva, breathing may stop. With severe symptoms, the patient may fall into a coma. The state of health worsens due to the increase in poisoning of the body.

The temperature is increasing.
The patient is vomiting, vomiting.
Stool disorder develops.
Weakness in the body.
The victim is shivering.
Cyanosis of the epithelium is formed.

Sometimes for the entire current day, the patient’s well-being deteriorates so much that the changes present can pose a threat to life.

First aid for bites

If bitten by a spider, what to do? First aid for a bite:

the bite is washed using water and cleansing with an antiseptic preparation, since in addition to poison, an infection caused by both poison and wound contamination will penetrate into it,
the puncture site will need to be examined, to monitor the well-being and signs of the victim in order to find out which spider attacked, and to assess the degree of danger,
if the arthropod has not disappeared from the field of view, it is better to photograph it, to provide the photo to the doctor,
in case of shortness of breath, loss of mind, you must immediately call an ambulance,
the bitten area is anesthetized with a cold compress made from clean water, this will slow down the effects of the poison,
an antihistamine is taken – Suprastin, Zodak,
do not move a lot so that the toxin does not spread throughout the body,
if the bite fell on a limb, then an elastic bandage is applied above the wound, it is recommended to take an elevated position in the arm, leg,
a lot of liquid is drunk, so the toxic substance will be released in the urine in a short time,
Do not comb the bite to prevent infection.

All subsequent activities will be carried out by doctors, according to the existing symptoms.

Treatment

What to do with a spider bite? If the victim indicates pain in the head area, discomfort in the limbs, he is given any pain medication. The greatest activity is observed in a number of medicines.

Analgesics, antispasmodics – Baralgin, Maxigan, Analgin, Spazmalgon.
Non-steroidal drugs that relieve the inflammatory process – Nurofen, Nimesulide.
Means with the inclusion of paracetamol – Efferalgan, Panadol.

If there are no funds presented, then the patient is given acetylsalicylic acid.

Drinking antihistamine:

Zodak,
Suprastin,
Cetrin,
Loratadin.

Due to a sharp rise in pressure to normalize health, it is recommended to take an antihypertensive drug.

Enapom.
Captopril.
Indapamide.

When a reduced pressure appears, it is necessary to solder the patient with strong coffee, sweet black, green tea.

In the hospital, a detoxification course is carried out using solutions of internal administration. This will quickly eliminate the toxin, preventing serious complications.

Consequences and complications

What to do with a spider bite? Initially, you do not need to panic, but carefully examine the puncture site, assess the degree of redness, swelling.They also monitor the state of health, whether there is nausea, dizziness, difficulty breathing. The outcome and complications are different, the threat seems to be only the bites of poisonous individuals.

The formation of the dangerous consequences of a bite is divided by doctors as follows:

mild – epithelial plethora, slight pain, swelling, burning sensation, itching,
moderately expressed – a state of drowsiness and rapid asthenia, trembling of the limbs, digestive disorders, peristalsis, pain discomfort in the bitten area for 2-3 days,
strongly pronounced – pain develops and diverges throughout the body, spasms, dyspeptic changes, urination, blood pressure rapidly decreases.

From serious situations that are formed on the basis of whether a poisonous spider attacked or not, infections of the skin are isolated.

Arachnosis – after the bite of a poisonous spider, without poison, there is a rapid development of necrosis of the epidermis. The pathological course also applies to the subcutaneous tissue, soft tissues located next to the bitten wound. The course of necrosis is observed with the development of fever, pain in joints and bones, low blood pressure, heart failure, destruction of red blood cells.
Loxoscelism is a skin lesion, a cellulose infection, which is fixed when a brown recluse spider bites. There is a rapid progression of necrosis, with the appearance of large ulcers that are difficult to treat. The development of the disease complications due to numerous signs of body poisoning.

Severe poisoning with spider poisons develops if there is no medical attention. When the bitten skin areas are started to heal on time, the victim’s condition will soon improve.

Preventive measures

While in the forest, another place where arthropods will be, it is necessary to take special protective equipment – sprays that scare off parasites, wear closed clothes.

If bitten by a spider, what should I do? Go to the doctor right away, a timely trip can prevent the development of serious complications.

90,000 Vegan eats a kilo of meat a day to avoid dying

California resident Sylvia Tabor, 32, was a long-time staunch vegan and ate only fruits, nuts, seeds and vegetables.Sylvia decided to go vegan after watching a documentary that shocked her about animal cruelty in the food industry, according to the DailyMail.

The girl was given a vegan diet very hard, she wanted meat all the time, she endured as best she could. When the steak was being fried, she had to leave the room. Eventually, the weakness became such that once moving the boxes, she broke two of her ribs. When tested in 2011, the doctor found blood in her feces and told Sylvia to stop with the vegan diet, otherwise irreparable consequences could occur.But, the girl did not want to change her principles and refused to eat meat. Apparently, in order to change your point of view, the blow had to be stronger.

Once relaxing with friends in nature, in July 2017 in Michigan, Sylvia met her savior – it was a brown recluse spider (brown recluse spider).

Brown recluse spider

The body of the spider is colored brown. Unlike most spiders, it has eight eyes.The span of the legs is 6-20 mm. Females are slightly larger than males. During the day, the spider hides, and at night it hunts its fellows and insects. Spiders are often found in human dwellings. They like to weave random nets in armfuls of firewood, boxes, basements, toilets and other places where there is wood and twilight. Spiders can be found in clothing, shoes, bedding, paintings and baseboards.

Danger of brown recluse spider to humans

This type of spider is not aggressive and very rarely attacks humans.Usually the spider attacks people when they threaten his life. This usually happens when the spider gets under clothes, on the bed, or when shoes are being put on.

Brown recluse spider venom

“The bite of a recluse spider often goes unnoticed. However, in most cases, the sensation is similar to that of a needle prick. Then, within 2-8 hours, pain and itching make themselves felt. Further, the situation develops depending on the amount of poison that has entered the blood, “- says Wikipedia.

“The bite of a brown recluse spider causes a series of symptoms known as loxoscellism. In most cases, a spider bite is insignificant and does without necrosis, but in large doses it can provoke the formation of a necrotic ulcer that destroys soft tissue. The diameter of the ulcer can reach 25 cm or more, and after healing, which takes 3-6 months, a depressed scar remains, ”writes Wikipedia.

The habitat of the hermit spider

“Distribution of this species – from the south of the midwest of the United States to the Gulf of Mexico.The range lies along a line from the southeast of Nebraska, through the south of Iowa, Illinois, Indiana and to the southwest of Ohio. In the southern states – from central Texas to western Georgia and northern Virginia, ”according to Wikipedia.

What happened to Sylvia after being bitten by a recluse spider

After being bitten by a spider, she contracted an unusual disease – necrotizing fasciitis (NF) – a bacteria that feeds on flesh. This terrible disease left terrible marks on her body, she literally ate her from the inside.

“At first I didn’t pay attention. Just a small bite on the ankle. But later I got small pimples in the groin area. They grew rapidly until they reached the size of my fist, ”says Sylvia.

Doctors were taken aback by a purple-colored tumor that stretched under her skin from groin to waist. In the end, doctors diagnosed NF and performed a successful three-hour surgery to remove the tumor, and a skin graft replaced part of Sylvia’s eaten body.

Sylvia’s friend jokingly suggested a “carnivore diet” as a result of which, trying to recuperate after a long illness, Sylvia began to eat steaks to save her life. She was literally obsessed with this. A friend began to call her crazy.

Now Sylvia eats a kilogram of beef or lamb per day, without seasoning it with anything other than salt. Sylvia has reconsidered her nutritional outlook and is confident that she now eats right and her diet is ethically healthy.Sylvia explains that she buys meat from a local farmer and knows that it comes from a good place.

“After the surgery and taking antibiotics to get rid of the bacteria that were eating up my body from groin to waist, I didn’t get enough nutrients. Also my digestive system has been destroyed by a long vegan diet. As soon as I ate the first piece of meat, I immediately felt better. I seemed to wake up. I began to feel that I was getting stronger, ”said Sylvia.

A vegan couple brought the child to complete exhaustion and rickets, as well as what veganism is and the possible consequences of such a diet, we learn from this article.

Spider spider photo consequences after a bite

In our area, one of the brightest representatives of arachnids is the cross. There are about 30 species in Russia. They differ in color, slightly in size. A characteristic feature is the presence of a cross-shaped pattern on the abdomen. Whether a spider cross or a crusader is dangerous for humans remains to be seen.

Description of appearance

You can meet the cross in the forest, garden, field, in the yard among the outbuildings. The spider loves a quiet place protected from sunlight. During the day, he sits motionless on a web or hides in a secluded place.

The size of females is not more than 1 cm, males are always smaller. The body is colored in brown, gray tones of different shades.

On the abdomen there is a pattern in the form of a cross of white, yellow, orange spots, stripes. For this reason, the spider got its name.

Legs are long, powerful, attached to the cephalothorax. The number of paws, like all types of spiders, is 8. The abdomen is convex, oval in shape. In front of the head are strong chelicerae, pedipalps. With chelicerae, the predator kills the prey, inflicts bites, injects poison. Pedipalps are movable tentacles. With them the spider grinds, grinds, grinds food, holds prey.

The crosses belong to the orb weaving family. They build trapping nets, wait for the victim, sitting on the web, or hang in the immediate vicinity.You can often find a spider in the center of your creation in the “X” pose. Plants, grass, tree branches, bushes, leaves are braided with threads.

Lifestyle, behavior

Predators live one at a time, gather in pairs for a very short time – during the mating season. Males crawl to the female’s web, carefully move the threads. A hungry spider can easily eat a gentleman even before he starts courting. If the chosen one remains in the center of the web, sits motionless, you can approach her.

After mating, the female forms a cocoon, lays up to 500 eggs in it. Fastens near its shelter, protects. After the birth, the spiders crawl in different directions. The mating period takes place at the end of July, by the beginning of autumn the young generation appears. They hibernate in the forest floor, under bark, tree hollows.

The crosses feed on insects. Butterflies, flies, grasshoppers, crickets, wasps, bees, fruit flies, mosquitoes fall into their trapping nets. The spider pierces the chitinous cover, injects poison, saliva.The toxic substance causes muscle paralysis, immobilizing the victim. Mica turns the insides into a liquid mass, which the predator then drinks.

Poisonous or not

For insects, the dose of poison is lethal. If a small rodent is bitten repeatedly by a spider, death can also occur. The dose of a toxic substance for large animals, humans does not pose a danger to life, but a local reaction appears at the site of the bite, and in some people the general state of health worsens.

Krestoviki are not aggressive, they do not attack people.They try to hide unnoticed in a secluded place. The bite happens by accident. A spider can crawl under clothes, hide in things that have been in nature. Often he gets into his shoes at night. Only inflicts a bite in self-defense. If the spider is not touched, no one will get hurt.

Bite symptoms

A small spider may not be noticed, but the bite is felt immediately. Severe pain arises. Further, the clinical picture develops in different ways, depending on the amount of poison ingested, the strength of the victim’s immunity, and the propensity for an allergic reaction.

90 120 90 121 pain;

redness;

edema;

swelling;

Two bloody spots in the immediate vicinity.

The photo of the aftermath after the bite of the crusader is presented below.

In case of insufficient wound treatment after a spider attack, suppuration appears as a result of a secondary infection. The sore spot swells, hurts, the scale of inflammation increases. Complicated spider bite in the photo below.

In people prone to allergies, with weakened immunity, small children, the general state of health worsens. This is due to the ingress of poison into the general bloodstream, an inadequate response of the immune system.

nausea;
weakness;
headache;
dizziness;
diarrhea;
the temperature rises;
blood pressure rises;
heart rate increases.

The condition is normalizing on its own or special treatment is required.The bite of the spider spider passes within a week with the right approach.

Problems with breathing from poison do not arise, but if this happens, you should immediately call an ambulance. The toxic substance causes muscle spasm, the heart and respiratory system suffers. With a minimum dose of poison, strong immunity, such a reaction does not develop.

What to do if the cross is bitten

A spider attack is practically no different from a wasp or bee sting, a hornet. Initially, you need to rinse the wound, remove the remnants of the poison, and disinfect so that the infection does not get.

First aid after a spider bite:

Rinse the wound under running water.
Lather with laundry soap, leave for 5 minutes, rinse.
Wipe the bite site with alcohol or a tincture based on it.

If you have to act in the wild, use available means:

vodka;
lemon, orange juice;
juice of celandine, plantain, dandelion;
saliva.

To relieve swelling, apply ice cubes, a cold compress.Eliminate itching, burning, and also disinfect the damaged area with baking soda paste, vinegar solution, shaving foam, toothpaste.

In the future, to accelerate the therapeutic effect, use a cream, an ointment with an antihistamine effect based on medicinal herbs, special substances. The wound is treated 2-4 times a day until the condition of the skin improves. The condition is normalized in 3 days.

Asterisk balm;
Psilo-balm;
Fenistil gel;
calendula ointment;
Menovazine;
Advantan.

If an infection has got into the wound, abscesses appear, they are treated with local antibiotics – Levomekol, Tetracycline ointment, Elokom S.

To eliminate the general symptoms of allergies, use an antihistamine inside – drops Fenistil, Claritin, tablets Diazolin, El-Tset, Edem, Suprastin. The treatment lasts 3 days without consulting a specialist. If the condition does not return to normal, you should consult a doctor.

The spider rarely bites, but every nature lover should know about the possible consequences.Prompt first aid can help avoid difficult consequences.

The cross-spider is a representative of the suborder araneomorphic spiders of the orb-web family. There are more than 600 species of these arthropods in the world. The distribution area of the crusaders is quite extensive – they can be found on almost all continents, except for Antarctica. About 30 species of these arachnids live in our latitudes.

Spiders of this genus represent a striking case of sexual dimorphism. In addition to differences in the genitals, two different-sex crosses differ in size, color, habits and other characteristics.After reading this article to the end, readers will get acquainted with many interesting details from the life of these tiny creatures, and also learn how dangerous the bite of a spider-spider is for humans.

Appearance and dimensions of the cross spider

Almost every person has met with representatives of the genus Araneus several times. These arachnids got their name due to their distinctive characteristic feature. On the spider’s abdomen, light spots form a kind of cross.The coloration of the crusaders depends on the environment. The sunnier the spider’s habitat, the lighter its color.

Like all representatives of the order of arachnids, the body of the cross is divided into the cephalothorax (prosoma) and the abdomen (opisthosoma), connected by a movable stalk. The body is covered with a tough cuticle containing chitin and proteins. On the abdomen of the spider there are spider warts.

The Crusaders have four pairs of simple eyes located on the cephalothorax, which provide them with an all-round view.However, their eyesight is weak. All they see is blurry silhouettes and approaching shadows. Sensitive hairs – trichobothria, located over the entire surface of the body, help spiders navigate the environment. There are especially many of them on the limbs. Eight walking legs are attached to the cephalothorax, as well as leg jaws – chelicera and pedipalps.

Chelicera are designed to capture and puncture food. They consist of two segments and end with claws. Capturing prey, the spider injects nerve agent from venom glands located at the base of these limbs.
Pedipalps are the organ of touch for spiders. With their help, they hold and feel the prey. Also, the functions of the pedipalps include reproduction, since on their terminal segment there is a copulatory apparatus, which is filled with seminal fluid before mating.

The sizes of the cross spiders are small, and they differ significantly in individuals of different sexes. Males grow no more than 1 cm, adult females reach 2 – 4 cm in length. During their life, the crusaders change their chitinous cover several times, and molt occurs at regular intervals.

Life expectancy and lifestyle

The lifespan of these amazing creatures is short. On average, cross spiders live for about a year , however, some individuals can live longer – up to two years . The crusaders lead a hermitic lifestyle. In their natural habitat, these spiders have many enemies. They have to be afraid not only of various birds, frogs and bats, but also of parasitic flies that lay their eggs directly in the spider’s body.Therefore, they are most active at night, when most of his opponents are asleep.

At night they weave nets to get food for themselves. Male crosses do this only in the initial period of their life, and with the onset of puberty they look for a female to prolong the genus. This explains the significant difference in size between female and male cross spiders. A very entertaining way of covering long distances for these tiny creatures. When competition arises in the territory where the crusader lives due to the accumulation of a large number of relatives, the spider on its cobweb flies to another place in the wind.According to scientists, in this way spiders can travel up to 400 kilometers.

Habitat

Depending on the species, cross spiders settle in different places. You can meet them in the forest and in the meadow, in vegetable gardens and in attics. These animals do not like the bright sun, so they weave their nets in shaded places. It is not uncommon to see crusaders in a person’s dwelling. There they climb into hard-to-reach places, place snares and wait for their victims.

Spider’s web

Cross spiders weave their trapping net almost every day.Indeed, in order to feed itself, a spider needs to constantly hunt. The web quickly falls into disrepair, since gaps are often formed in it due to trapped prey.

As already mentioned, female spiders predominantly hunt. These amazing creations are highly skilled weavers. They are able to weave large webs. The cross network has a complex structure and resembles a wheel in its shape. The web weaving method is quite interesting. The female spider releases a spider’s thread from special glands.Having fastened it at one end, at the other end of the thread, thanks to the air currents, it sways until it catches on the opposite edge. Continuing to act in this way, the spider builds the basis of the future web. Most often it has the shape of a polygon. Along the ready-made threads of the web, the cross crawls from one side to the other, thus extending numerous spirals and radii. By the way, the distance between the spirals of the web is always the same. The mesh maintains such precise parameters with the help of pedipalps, which it uses as a measuring ruler.

The construction of the trap ends with a signal thread, which the spider stretches to its shelter. Weaving a web takes several hours and takes about 20 meters of thread to build. Moreover, the trapping net consists of two types of spider web. The spider uses a thick cobweb to build a frame, and a thinner, sticky thread to weave trapping spirals. The spider itself moves only along thick threads so as not to fall into its own trap. The trapping spider net always has 39 radii and 35 spiral turns.The attachment points of the radii and spirals of the web are always 1245.

How does a spider manage to build such complex structures? Scientists believe that the ability to weave spider webs is at the genetic level, so even newborn spiders are able to weave a web no worse than adults.

In terms of its chemical composition, the spider’s thread is a complex protein compound – fibroin. By its strength, the web is much stronger than any synthetic thread and can withstand a load of more than 250 kg per square meter.mm. Therefore, until now, the inhabitants of tropical countries make fishing nets from the cobweb. Spider webs are also used in optical devices. An air analyzer has been developed on the basis of a spider filament. Since the spider web has antibacterial properties, it is used to make medicines.

What does the cross spider eat?

The cross spider belongs to the carnivorous arthropods. The diet of small predators is based on various insects that come across in its nets: mosquitoes, flies, grasshoppers, aphids, as well as small beetles.Having placed their snares, the crusader freezes in the center of the web or in a nest that is nearby. A signal thread is connected to the spider’s lair. When prey falls into the trap, the spider, feeling the vibration of the signal thread, instantly creeps up to the victim and paralyzes it with the help of its poison.

The crusaders, like most arachnids, have external digestion. When the “game” ceases to resist, the spider pierces the insect’s cover, launches digestive juice into it and waits for the food to be digested.After the food reaches the desired condition, the crosspiece sucks out the nutritious substance. If he is not hungry, he entangles the prey with cobwebs and hides it in the fallen leaves. The appetite of spiders of this genus is rather big. In a day, he can eat food equal in mass to his own weight. The spider is very interesting when it comes to large and dangerous prey entangled in its web. He simply bites the threads and releases the victim.

Reproduction and development

At the beginning of autumn, the mating season begins for cross spiders.Males leave their shelters and go in search of females. After the object of desire is found, they begin the marriage ritual. The spider climbs onto the web and touches the threads of the web with its paw. However, first he prepares the way to retreat, so as not to be eaten if the “lady” does not figure out who came to her possession. Feeling the vibration of the cobweb, the female gets out of the nest and approaches the guest. It remains for the male to reach with the pedipalps to the genital opening of the female and transfer the seminal fluid.

As a rule, after the fulfillment of the conjugal duty, the spider kills the gentleman. Only the most agile spiders manage to escape.

The female weaves a cocoon from a web and lays up to 800 amber eggs in it. At first, she wears a cocoon on herself, then finds a secret place and carefully hides it. She usually dies after that. Cocoon perfectly protects future offspring from cold and rain. Having overwintered under reliable protection, in the spring, small crosses appear, which do not immediately leave the mother’s cocoon.Only after getting stronger, the spiders get out of it and crawl in different directions.

Poisonousness of the cross and danger to humans

To protect against enemies, nature has provided spider-spiders with poisonous glands. Crusader venom is capable of killing not only insects, but even small rodents. Usually, the crosses do not attack people. But still, there are times when a spider bites a person. The poison of spiders of this genus will not bring much harm to adults, but it will give quite unpleasant sensations.

Redness and itching are observed in the affected area. A slight increase in body temperature, headaches and joint aches are also possible. Children and the elderly are especially susceptible to cross bites.

To avoid contact with representatives of this genus of arachnids, the necessary precautions should be taken. Do not allow cobwebs to appear in the house, use mosquito nets, do not pick up spiders. When visiting the forest, carefully walk around the places of possible habitation of the Crusaders.If a spider has bitten you, you need:

Wash affected area with soap and cold water.
Apply a cold compress.
Take antipyretic drugs.
For allergy sufferers, take antihistamines.
If condition worsens, seek medical advice.

Despite the negative attitude of many people towards spiders, these creatures are of great benefit. They kill a large number of harmful insects and are an important link in the food chain.If the spiders disappear, irreparable damage will be done to our planet!

Spider-cross – is a prominent representative of the orb-web spider family. They live almost everywhere, well, except perhaps except for the northern part of the planet and the hot south. The cross spider is the most common species of its family, in which there are about a thousand representatives of scientists.

The crosses live both in the wild and in living quarters. Hides in dark places, crevices.

The way of life of the cross is nocturnal.During the day, he sits in his hideout, not far from his web. They are waiting for the prey to fall into the web. And as soon as the insect enters the web, the vibration of this web begins, the spider immediately activates and rushes to the victim.

Signs of a spider cross

You can recognize the cross spider by its color.

On top of its abdomen, a light cross is clearly visible, thanks to which the spider got its name.

The round belly of a spider itself has a dark brown shade, the same color in a spider and its cephalothorax with 8 eyes and the same number of legs.The location of the eyes (in a circle) allows him to observe what is happening around. And its legs are distinguished by the highest level of sensitivity.

Females of the crosses have a large body size – up to 3 cm, while the male is much smaller than them – up to 1 cm.

The main diet of cross spiders is small insects – aphids, midges, flies, mosquitoes. The spider kills its prey, which has fallen into the cobweb with the help of its teeth with poison. When a spider is hungry, the prey is immediately eaten by it. If the hunter is full, he braids the trapped insect with a cobweb and hides it in a secluded, only known place for the future.

Reproduction of cross spiders occurs in this way: the male attaches to the side of the female’s web and gives her signals to notice him. Immediately after short mating games, the male usually dies.

A female begins weaving a cocoon, in which, after maturation, she will lay eggs. At first, the female wears a cocoon with clutch on her abdomen, she is looking for a secluded place where she can put it so that nothing and no one will prevent her cubs from hatching.

Symptoms of cross bites

For large animals and for humans, the poison of the spider-spider is not particularly dangerous, because it is too small to cause significant harm to a large body.

Maxim, when it is possible to kill with this dose – a mouse or a rat.

And yet, the bite of a spider of this species is not completely harmless. If this arthropod creature accidentally gets into the web, a person can still suffer from its bites.After all, the spider takes for a sacrifice everyone who leads to the vibration of its “trapping net”. And in self-defense, of course, the spider will bite anyone.

The cross can also bite when a person tries to pick it up.

The clinical picture of spider bites will be as follows:

The bite site turns white and becomes similar to a bee sting;
The spot grows to the size of a penny, blushes at the edges;
Swelling at the puncture site;
Burning sensation at the site of the bite.

And if a person suffers from allergic reactions, then it may well be that the bite of this insect will cause the following symptoms:

General weakness of the body;
Rash on the skin in the form of red spots;
Headache;
Painful syndrome in the limbs;
Increase in body temperature;
Hardening at the site of the bite.

As a rule, a greater sensitivity to cross bites is noted in childhood and in allergy sufferers.

Therefore, these groups of people may experience not only the above symptoms, but also develop more serious complications in the form of suffocation, intense edema, up to disturbances in the work of the cardiovascular system.

When such a clinical picture develops, it is very important to immediately call a qualified medical team for soon help and hospitalize the victim for adequate therapy and constant medical supervision.

First aid

Despite the absence in medical practice of deaths from bites of a spider-spider, the victim still needs help in these cases.

Therefore, when bites of these individuals of the arthropod family are found, the following measures must be taken:

Washing the bite site with warm water and soap. Thus, micro-dirt particles are washed off from the skin, which prevents infectious microscopic agents from entering the wound.
The affected areas are covered with cold compresses (ice cubes or a bottle of cold water can be used). Such a compress will help relieve painful syndrome and prevent possible swelling.
In the event of a migraine (headache), a rise in body temperature, the victim can be given paracetamol to drink.
In case of an allergic reaction, it is imperative to administer oral antihistamines. It is also necessary to provide the victim with a plentiful drink before the arrival of the doctor.
Make sure that the victim does not scratch the wound at the site of the bite. Otherwise, it will cause an infection to enter it with the subsequent development of various complications.

In cases of a cross bite of a child under the age of 6 years, you should immediately go to the attending physician or call the emergency team soon, since the poison of this type of spider is very toxic and dangerous for the child’s body.

Prevention

It is quite possible, adhering to certain rules of behavior in direct contact with wildlife, to prevent bites of a spider-spider.

In case of a planned overnight stay in nature, it is important to take with you and use there special insect repellents (external repellents) during your camping trip.
Be sure to carefully close the entrance to the tent.
All bedding and sleeping clothes should be carefully checked before going to bed to ensure they are free of insects.
The same thing (see point 3) should be done immediately after waking up and when collecting things home.
When choosing clothes for a hike, you should take things that cover as much as possible all parts of the body.
If you see a cobweb on the way, it would be better to bypass it, trying not to touch it with your hands or clothes.
During the hike, try to avoid abandoned buildings, sheds, barns and other dark places where different types of spiders may be in a large concentration.
It is imperative to teach the child all these rules of behavior in nature in advance, and explain to him all the danger of direct contact with a detachment of arthropods.

This is interesting

The spider-cross, when hungry, is able to eat as much food as it weighs itself.

If an insect that is too large or poisonous gets into its web, the spider breaks off its web so that the inedible prey simply falls down.

One catching web of a spider-spider consists of 20 m of “thread”.

In ancient times, the spider’s web was considered a good antibacterial agent. Therefore, when a bite is found on the body of a given spider, its own cobwebs can be attached to it in order to avoid the spread of the toxin throughout the body.

Potential consequences

The venom of the spider-spider is epeirotoxin. It is completely absorbed and excreted from the human body within 24 hours. At the site of the bite, slight swelling may remain for some time.
When combing the bite of the spider, it is possible to enter an infection through the wound and develop a purulent process.
It is impossible to cauterize or heat the bite of the spider; this can cause a back reaction in the form of soft tissue necrosis around the wound.

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90,000 photos of bites and symptoms. What to do with a bite of a karakurt, a hermit, a tarantula and a black widow

In the modern world, the popularity of keeping exotic wildlife at home grows at a frantic pace every year.In addition to pretty Raccoons, tarantula spiders can be seen in domestic foxes, iguanas and other equally beautiful pets.

With their frightening appearance, tarantulas catch fear on the largest percentage of people. However, there are also those who are crazy about these creatures. Despite the large number of recommendations and rules for keeping spiders, tarantulas are unpretentious in care and are very independent.

Beginners can also acquire the safest breeds and become real owners of a home terrarium.However, sooner or later the question arises: “How aggressive can tarantulas be and what are the consequences of a tarantula bite?”

Reaction of the body to a spider bite

Local reactions are expressed by external symptoms. After the bite, the typical lesion is characterized by canine marks (leaving 1–2 separate entrances). Local inflammation occurs within a few minutes, resulting in a bright red spot followed by induration. Sometimes this can be accompanied by the formation of new red plaques around.Localized swelling usually lasts 7-10 days.

In some cases, a more serious reaction, called necrotizing local reactions, can occur from the bite of certain species. In such cases, a bubble occurs, followed by the formation of an ulcer with a crater. The wound heals over several weeks with the formation of a scar.

Systemic reactions – internal inflammatory processes. Sometimes, during bites, the components of the venom can be introduced into the body in sufficient quantities to damage several systems.When this happens, most of the venom passes through the circulating lymph. Thus, non-specific generalized systemic inflammation may occur, leading to symptoms such as:

fever;
muscle pain;
fatigue;
enlarged nodes.

Some species of arthropod predators cause blood clotting disorders.

In addition to specific syndromes, the most dangerous is an allergic reaction, either due to a direct bite or contact with spider hair.This happens in tarantulas. Symptoms can range from mild to anaphylactic reactions. The latter can be life-threatening and is considered a reason for calling emergency medical attention.

Further treatment

Treatment of a spider bite begins with debridement of the wound. With severe pain syndrome, the use of analgesics is necessary. Antihistamine therapy continues.

If signs of renal or heart failure are detected, appropriate treatment is prescribed.

Detoxification of the body is carried out by drip injection of saline and glucose solution, this is necessary to maintain the electrolyte balance.

For recluse spider bites, surgical treatment may be required to remove necrotic tissue. It is necessary to carry out the operation after the zone of necrosis is completely indicated. This happens only a few weeks after the bite. Until that time, regular debridement of the ulcer and bandaging is carried out.

Tarantula bites

The tarantula is strongly associated with poisonous spiders, but this idea is somewhat exaggerated. Indeed, a tarantula spider bite can cause some painful symptoms, but deaths are extremely rare and most often associated with a combination with other internal pathologies.

Tarantula is a spider of steppes and deserts that lives in depressions, sometimes reaching up to one meter. It is almost impossible to meet a tarantula during the day, since it is a purely nocturnal predator.The notorious danger of a tarantula, first of all, concerns insects, which the spider prefers to eat. In humans, the bite of a tarantula spider causes pain and burning at the site of injury. Tarantula bites are extremely rare and non-venomous, but an angry spider can shed needle-like hairs that enter the skin or eyes as foreign bodies and can cause mast cell degranulation and pseudo-anaphylactic reactions (eg, urticaria, Quincke’s edema, bronchospasm, arterial hypotension) in sensitive people, usually spider owners, who come into contact with them on a daily basis.

Local edema develops, a small rash may form around the wound. The bite of a large tarantula is accompanied by hyperthermia, headache, paresthesias, and general weakness. Death is extremely rare and is associated with a general allergic reaction to toxins and anaphylactic shock. A simple bite of a tarantula spider disappears without a trace within 3-5 days.

What spiders bite

Experts say that spiders that live in Russia do not attack themselves, do not rush to attack humans.They do not differ in an aggressive disposition, they prefer to quickly hide in a secluded place without unnecessary incidents. If the situation develops in such a way that the predator feels a threat to its own life, it bites, injects poison. Absolutely all arachnids bite, but the consequences are different.

You can meet a predator at home. In the warm season, spiders settle in residential buildings, apartments, penetrate through open windows, doors, cracks in the wall. Small spiders hide in the corners during the day, behind furniture, at night they are active – weaving a web.The bite of a domestic spider is a rare phenomenon, not dangerous. Small children under 1 year old suffer, who showed excessive curiosity, were left without parental supervision. Home spiders are dangerous only for people with arachnophobia.

The most dangerous species of arachnids in Russia live in the wild, but in search of food, in the process of migration, they may end up in the possession of a person, his home. Often, predators bite people in nature, after they quietly climbed into things, shoes, clothes. A bite is applied imperceptibly.

Symptoms of bites

You can determine what a spider bite looks like and distinguish it from other insect bites by the sensations and symptoms that occur during this:

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The bite may be barely perceptible, or it may correspond to a sharp needle prick.

Immediately at the site of the lesion, a white, swollen speck with a pinkish rim appears.

Over time, pain in the affected area grows

A blister may form

teeth all over the body, a rash

either gets a red tint, swells

drops in blood pressure up or down

tachycardia, digestive tract disorder

general weakness, sweating.

Symptoms may vary depending on the type of spider causing the injury.

Hermit Crab

Is one of the four most venomous spiders. It is not considered an aggressive insect, and only bites as a defense if a person gets very close. The venom of this insect contains cytotoxins and hemolytic enzymes that have a detrimental effect on red blood cells.

The bite of a hermit spider is practically not painful, at first there is a little burning and redness.Subsequent symptoms can be felt after 2-6 hours, while the victim will feel:

severe pain and a tooth in the affected area;
fever, muscle pain;
nausea, vomiting.

In difficult cases, a blister forms on the skin, which develops into an ulcer, necrosis begins, which affects the deep layers.

Sometimes there is intravascular hemolysis and hemoglobinuria, which can be fatal, in large cases in children.

Karakurt

Karakurt (black widow) is the most dangerous species in our area

It is important that only female black widows can bite, whose venom includes more than six active components of neurotoxic action. Spider bites will manifest with the following symptoms:

initially there is no pain after the bite, a red spot appears, which soon disappears;
after half an hour, severe pains in the abdomen and lower back begin;
Difficulty breathing, pulse slows down
Abdominal muscles tense, legs go numb;
convulsions appear, face turns blue
nausea and vomiting;
there is a strong mental agitation, panic, fear of death.

Excited state changes with lethargy and drowsiness. Within three days after the spider bite, the symptoms disappear, but the victim experiences weakness for another month. To prevent the black widow from becoming the cause of death, an antidote injection is urgently required.

Cross

The bite of a cross spider is dangerous, but not fatal to humans. His body is designed in such a way that it is not able to bite through rough areas of the skin. Intoxication occurs when a spider has bitten on parts of the body with thin skin.

After the attack of the cross, the affected area becomes a white spot with a pinkish rim, then it turns red, hardens and swells. Within 5-20 minutes, a person will feel the following unhealthy signs:

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general weakness;

headaches;

muscle pain, joint aches;

the affected area begins to show and itch

subcutaneous hemorrhages may appear.

in rare cases, the body temperature may rise;

If there are allergic reactions to insects in the bitten person, you should first call the ambulance team.

Tarantula

The poison of a tarantula has a paralytic effect on small insects and animals. For humans, the dose released by one spider is not enough to lead to death. The bite of a tarantula is very painful, comparable to a hornet or a wasp. In this case, the following symptoms will appear:

two small punctures will appear on the skin.
The affected area is redder, swelling, itching and burning occurs
Slight increase in body temperature.

If a person has an allergic reaction to tarantula venom, the symptoms will be more significant. Fever, fever, numbness of the extremities may occur, the pain will be intense, the body temperature may rise to critical levels.

Cross spider: is it dangerous for humans

As a rule, a bite does not carry any consequences. The exception is people who are at risk. It is better for them to consult a doctor, discussing the possible consequences.In some cases, local suppuration of the wound can occur in case of poor treatment. Eliminate the characteristic type of inflammation by treatment. Use special ointments, in some cases – antibiotics. In rare cases, hemorrhages are observed under the tissue in the area of the bite.

After the release of toxins from the body, itching or pain may occur in the area of the bite. It can be treated with herbs or ointments with a calming effect. It is necessary to familiarize yourself with the list of contraindications! Cardiac abnormalities, pain throughout the body, shortness of breath and pain in the respiratory tract require a specialist examination.

Interesting facts about the crusader:

Despite its myopia, the arachnid feels space well, including its own web. At the level of touch, he knows where to go and where not.
The cross will not attack an insect that is dangerous or poisonous to it.
Among the arthropods of their class, crosses are the most common.
Most males die after mating. The female is able to kill the cavalier with her poison.
Average life expectancy – 1 year.
Able to feed on other arthropods.
Movements are carried out with the help of a web, trying to quickly separate from other arachnids.
Has an immoderate appetite, but if not hungry, then after killing the victim, it leaves it in a cocoon until it is eaten.

Precautions:

While in the house, make sure that the house is not chosen by arachnids. Clean regularly.
If a cross is found, remove it together with the net using a stick or other object.
When on a picnic, carefully choose a place.
Before going to bed in the country or in nature, check tents and sleeping places.
When putting on clothes, check them carefully.
Avoid favorite spider habitats.
Avoid body-to-body contact.
If a spider crawls over a person, it should be gently swept away or blown away without making any sudden movements.

Advice! If you need to stay in the habitat of the crosspieces, wear protective clothing and gloves.

It should be remembered that the arthropod will bite when getting food or in self-defense! In other cases, it will not make contact.

Mother Nature is prudent, therefore arachnids are an important part of this world. Without them, the number of pests would increase. Being in nature, ecologists do not recommend intervention and their livelihoods. The cross spider is poisonous for small insects, but not for humans.

Preventive measures

Prevention measures are reduced to the minimum “communication” of a person with arthropods. Any close contact with them should be excluded, and even more so – not to take them in hand. Before going to bed, you need to inspect the bed, and it is better to shake it up. Most spider bites occur at summer cottages, forest walks and picnics, so it is recommended that clothing and shoes be checked carefully, and tents and sleeping bags covered with canopy. Such precautions will help to avoid the close “acquaintance” with the spider as much as possible.

Spider bite – symptoms in humans

The development of general symptoms depends on how the spider bites, what species it belongs to, how much poison it injects. In most cases, people get off with discomfort, painful sensations on the skin, and some of the victims do not notice anything at all, the bite goes away on its own.

A huge role is played by the strength of immunity, individual characteristics of the organism. However, in the event of a poisonous spider bite, even the strongest defensive reaction may not work.The effect of a toxic substance depends on qualitative, quantitative indicators. The spider bites once, rarely makes a second attack. After the first attack, he tries to quickly hide in a secluded place. The poison enters the bloodstream, spreads throughout the body, what the consequences will be depends on the quality indicators, the mechanism of action of the toxic substance.

Neurotoxic poison affects the central nervous system, peripheral. It provokes muscle spasms, which disrupts the work of internal organs – the heart, lungs, stomach, brain, etc.
Spider hemolytic venom destroys red blood cells, leads to a change in the composition, quality of blood. The bite can cause internal bleeding.

Spiders in Russia are the owners of a neurotoxic substance. The consequences depend on the composition of the poison. With a potent substance, a deterioration in well-being is observed within 15 minutes after the incident.

weakness;
headache;
dizziness;
loss of consciousness;
nausea;
vomiting;
diarrhea;
difficulty breathing;
laryngeal edema;
shortness of breath, lack of oxygen;
limb tremor;
muscle pain;
profuse sweating;
violation of coordination of movement;
heart palpitations;
increase in blood pressure, body temperature;
pallor of the skin;
slowing down the pulse.

Consequences of a bite

Without timely medical care, a person can die from suffocation or cardiac arrest.

Danger of poison

Eight-legged invertebrates produce three types of basic substances:

web for catching prey, weaving cocoons and nests;
toxins to kill the victim and feed;
Sex pheromones.

Please note. Spider venom not only kills, but also turns the internal organs of insects into liquid, which is then sucked out by spiders from their remaining chitinous covers.

The larger the individual, the more dangerous it is. It also depends on the toxicity of the poison, its amount and the size of the chelicera. The last predators bite through the skin. However, those specimens that settle in houses cannot damage the epidermis of an adult healthy person so that the poison enters the bloodstream.

In some cases, this can still happen, but the strength of toxins and their amount will be clearly not enough for the victim to develop intoxication. It is extremely rare that the symptomatology is pronounced, which is typical for people who are allergic to the biological components of spider venom.

Clinical manifestations characteristic of this pathology are listed below:

after a while a small spot (white or pink) with red borders and puncture marks forms on the skin;
the moment of the bite itself, as a rule, is not noticeable;
development of slight hyperemia and edema;
in the form of a local reaction there may be burning sensation, itching, painful sensations are quite rare.

In extremely rare cases, an allergy to toxin components develops.In this case, the victim should be urgently examined by a doctor, so you need to call an ambulance or take the patient to the clinic.

Dangerous signs are listed below:

at the site of the wound, the formation of severe edema and hyperemia, which spreads to most of the limb;
weakness and dizziness;
nausea, possibly vomiting;
shortness of breath, dyspnea;
drop in blood pressure;
increased salivation, sweating;
anxiety, panic.

Note. House spiders never attack themselves. A bite occurs during an attack on an insect or through accidental contact with it, for example, while sleeping. There will be only one mark on the skin, because after that the predators try to retreat as quickly as possible and flee. It is important to understand that an attack on a person is not typical for them.

Signs and superstitions

Hermit spiders, like the rest of their relatives, are associated with many signs and superstitions.

It is believed that the spider living in the house completely absorbs the negative energy accumulated in the corners. For a long time, people believed that a family that killed a spider would expect trouble and misfortune.

The house in which the spiders settled was considered rich and happy. The belief is based on a reasonable explanation: arthropods prefer to settle in dry and warm rooms. The well-to-do farmstead is characterized by the creation of suitable conditions for the habitation of spiders.

They also try to associate the behavior of an arthropod with signs:

if they hide, expect rain;
In warm, dry weather, spiders actively build cobwebs, often catching the eye.

If an arthropod is found in an uncharacteristic habitat – a bathroom – this is associated with expected problems in personal life or financial losses.

Many people attach importance to the direction of movement of the animal in relation to man. If the arthropod moves towards, good news is expected, otherwise – bad news.

Spiders in dreams

In dream books, the spider acts as a key figure that determines the destiny of fate:

gypsies believed that a dreaming spider was a great luck;
Miller’s dream book – to career advancement, a large cash bonus, a positive assessment of the management;
according to Vanga – to scandals, serious quarrels;
Spaniards believe that an arthropod dreams of losing its reputation associated with a scandalous story, meeting an ill-wisher;
French belief – to treason.

Despite the various interpretations of beliefs and superstitions, the hermit spider is a dangerous animal for humans through direct contact. Therefore, reasonable preventive measures and knowledge of the characteristics of the animal’s behavior will not interfere in order to protect themselves from unwanted consequences.

Consequences and manifestations of a bite

Having suspected a bite, first of all you need to try to determine whether it was inflicted by a spider and what kind of arthropod could attack.

The bite site is very painful, numb and subsequently may swell

Local clinical manifestations have certain similarities regardless of the type of spider. They are represented by:

pain of varying degrees of intensity;
pronounced redness of the skin;
swelling, burning and itching in the area of the bite.

Other characteristic symptoms of a spider bite include:

body rash;
temperature rise to critical levels;
intense headaches before loss of consciousness;
increased heart rate and heart rate, surges in blood pressure;
muscle spasms and even cramps;
general weakness with increased sweating;
joint aches;
nausea and vomiting;
anxiety, agitation and delirium;
uncharacteristic urine color;
pain in the abdomen and chest.

Pain in the right side, as in appendicitis, with numbness in the bite area, are characteristic of a karakurt attack. A bluish area of the puncture surrounded by white and red rings is a sign of an attack by a hermit spider.

In case of allergy to spider venom, the following may occur:

edema in the area of the bite;
shortness of breath or suffocation;
dizziness;
loss of consciousness;
anaphylactic shock.

The general painful condition and local manifestations of intoxication persist for a week, after which a small scar remains at the site of injury, which eventually becomes invisible.However, in the event of an attack by a dangerous poisonous spider, the skin in the area of the bite may die. Tissue necrosis is sometimes complicated by infection, as a result of which its length increases, and the healing process takes months.

Folk remedies for a bite

To eliminate unpleasant symptoms, accelerate the healing of the epidermis, use:

Vinegar solution. For a glass of water, 1 teaspoon of the product. Treat the bite site.
Baking soda paste.Dilute with water to a state of gruel.
Juice of lemon, orange, cucumber, onion, parsley, potatoes, as well as dandelion, plantain, celandine.
Toothpaste, shaving foam. Apply to the bite site for 5 minutes, rinse off.
Aloe vera leaves or juice.

Used for minor manifestations of allergies or as an adjuvant.

Interesting facts about spiders

Spiders are predominantly nocturnal;

Some species of spiders can live without food or water for up to several months;

The largest spider in the world is the Galiaf spider (Theraphosa blondi), which can reach 30 cm in length.

In the world at the moment, scientists know the only spider that feeds on plant leaves – Bagheera kiplingi.

The most venomous and aggressive spider in the world is the banana spider (Phoneutria nigriventer).

Statisticians note that from 3.5 to 6.1% of the world’s population are afraid of spiders. The fear of spiders is called arachnophobia.

All good, peace and health!

It’s no secret that many people are afraid of spiders. There is a very good reason for this – their bite. Most spiders are non-venomous or low-venomous (their size is so small that the dose of the injected poison is not enough even for an adult to sneeze).But a tarantula, karakurt or a “black widow” and a brown hermit spider are three reasons for concern. Their bite is considered the most poisonous and very dangerous. And the bite of the “black widow” is even fatal for people with weak immune systems.

Usually these spiders live in a warm, moderately humid climate, dry, dark places are their favorite, they can settle, for example, in a closet or under a drain, in an abandoned building.

It is very important to have an idea of what these three types of spiders look like in order to avoid meeting with them in the future, but, if this did happen, then to know what further steps to take for treatment.The most dangerous spider is karakurt (“black widow”)

A peculiar pattern and visiting card is a red hourglass on the abdomen. Usually inhabits steppes and deserts, activity develops especially at night

The most dangerous spider is karakurt

(“black widow”). A peculiar pattern and visiting card is a red hourglass on the abdomen. Usually inhabits steppes and deserts, activity develops especially at night.

The brown recluse spider

is painted in gray, dark brown tones, and the darkening on the back resembles an inverted violin.It dwells in warmth and in places where there is something wooden and dark. You can find it in an armful of firewood, behind a baseboard, even in an empty box and in clothes.

Tarantulas

, unlike the karakurt and hermit spider, is rather large (the size of adults can reach 3.5-4 cm). They are often found in steppes, deserts and live in vertical burrows.

To avoid being bitten

, you must wear closed toes, do not come close to the spider if you see it and, moreover, do not take it in your hands.Follow these basic rules, and you will not have to deal with the consequences.

Characteristic features of bites:

A tarantula bite resembles a bee sting, after which there is swelling and pain at the site of the bite. The symptoms disappear after a few days.

The bite of a karakurt is similar to an injection – almost painless. Usually the symptoms appear after a couple of hours – swelling, redness, pain, then the pain intensifies and spreads to the lower back, abdomen, shoulder blades.Death is possible in 2% of cases.

A burning sensation immediately appears at the site of the bite of the brown recluse spider, then redness and a blister with fluid appear at the site of the bite, after which a constantly increasing ulcer forms.

A little about insects

Today, 40,000 species of spiders are known.
Spiders live on our planet for at least 400 million years, so they can be safely ranked among the most ancient earthly creatures. Today, about 40,000 species of spiders are known, however, most of them do not pose any danger to humans.

Each spider is a priori poisonous, because these creatures are predators, and their venom is a prerequisite for a successful hunt. In addition, venom glands are a formidable defense weapon.

Spider venom can be divided into two groups, it is neurotoxic and hemolytic.

Most spiders produce neurotoxins. This type of poison acts on the nervous system and paralyzes the victim. The bite of a small spider is not dangerous, since its fangs are too small or fragile to pierce the skin of a person or animal.The bite of such a spider is fatal to a fly, and does not cause any harm to a person.

But there are some spiders whose bite can create serious health problems and even lead to death. Among the spiders living in our latitudes, the most dangerous are karakurt and brown hermit spiders. We advise you to stay away from them and purchase a similar device so that spiders do not crawl to your home.

More information about these insects can be seen in the video.

Bite symptoms and what to do

The first signal of a bite is a sharp throbbing pain. After a while, it disappears, giving way to a burning sensation. The bite site begins to itch, may turn red or swell. In the area of the lesion, two spots are visible through which the bite was made. Depending on the amount of poison injected, dizziness, drowsiness, general weakness, and nausea may occur. A person can vomit.

Despite the fact that the cross is poisonous, it does not pose a danger to human life.It is dangerous for insects and some animals. For example, mice and rats. Larger animals will survive after being bitten. A person can be bitten if he accidentally falls into the area where the web is located, or picks it up. In other cases, the arthropod will try to avoid contact with humans. Its appearance is also designed to scare away enemies. The bite of a spider spider has its own symptoms that are unpleasant for humans. However, they do not carry any particular danger.

Pay attention! Introduced through the wands, the poisonous substance leaves the human body after a few days.But nevertheless, in order not to be bitten it is better to follow the rules of prevention .. Even if there is no photo of an arthropod at hand, you can recognize it by the chitinous membrane and the characteristic pattern on the abdomen

First of all, you should not panic – no one died of a crusader bite! A bitten person should correctly assess his condition. If you suspect that a lesion has serious consequences, seek medical advice. Most often it is necessary for people with allergies. The elderly and children are also at risk.In 99% of cases, medical intervention is not required and it is possible to do with standard first aid methods

Even if there is no photo of an arthropod at hand, you can recognize it by the chitinous membrane and the characteristic pattern on the abdomen. First of all, one should not panic – he did not die of a crusader bite! A bitten person should correctly assess his condition. If you suspect that a lesion has serious consequences, seek medical advice. Most often it is necessary for people with allergies.The elderly and children are also at risk. In 99% of cases, medical intervention is not required and it is possible to do with standard first aid methods.

First aid for spider bites:

Wash hands well with laundry soap. If it is not at hand, any other will do. The water should not be hot.
Apply cryotherapy with ice or a very cold object to relieve swelling and swelling.
Take an antipyretic drug.Reception is not required, but with the slightest deterioration in health, it is better to play it safe. Paracetamol can be used.
Keep the wound clean and calm.

If the condition worsens, see a doctor. Allergy sufferers are at risk, so it is better to take antihistamines that are suitable for history. For example, Fenistil or Suprastin. If the victim is an elderly person or a child under 14 years old, you should consult a doctor! Poison can be dangerous for children under 5 years of age.

What to do if bitten by a spider?

A spider bite is something that can trap summer residents, lovers of agriculture and gardening, as well as tourists and fans of outdoor recreation. Considering that the summer and tourist seasons are in full swing, the risk of suffering from a spider bite increases. In our area, bites are most likely spider-spider and house spider. Bite spider-spider-spider – this is a very common species of arthropods, it is found almost everywhere. The spider got its name because of the characteristic pattern on the body.The poison of the cross contains hemolysin, this substance destroys red blood cells. However, the amount of this poison in one individual is small, therefore, the bite of the spider does not pose a serious threat to humans. However, the bite can cause great discomfort in the form of pain, burning, dizziness and joint aches. The spider’s venom is completely removed from the body in a day, but the bite site itself can remain sore and swollen for several days. Domestic spider bite Domestic spiders are represented by several species, more often than others there is a black spider.This arthropod can live both indoors and in window frames, in walls, especially logs, Nameless, on tree trunks, etc. Bites of a domestic spider are rare, as you need to try very hard to bring a spider into such a rage to provoke a similar reaction … If the trouble happened, then the bite site really hurts, but the pain is bearable. Also, in the area of microdamage, slight swelling may develop; symptoms of dizziness, nausea and fever are extremely rare.Domestic spider bites do not cause severe intoxication; it is enough to apply ice or a cold compress to the puncture site. Usually, within 1-2 days, all traces disappear without special treatment. What to do if a spider has bitten? If a child or an adult has been bitten by a spider, and no one is immune from this, timely first aid can save health. Therefore, you should know what to do with spider bites: – if the bite is characterized as not too dangerous, the site of injury should be washed with running water, preferably with soap, to avoid possible infection of the wound; – the bitten limb should be immobilized (immobilized) in order to reduce the possibility of the spread of poison ; – a cold compress should be applied to the puncture site, ice is better; – drink a lot of liquid, this will accelerate the elimination of toxins; – with mild symptoms in the form of a headache and a slight increase in temperature, you can take paracetamol; – to prevent an allergic reaction, take an antihistamine – Allergostop, Loratadin, Tsetrin.If symptoms cause concern, you need to call an ambulance or see a doctor yourself immediately. It is especially worthwhile to hurry up in such cases: – if a spider has bitten a child (under 16 years of age). – bite symptoms develop rapidly, the condition worsens sharply. If you suspect a poisonous spider bite, you should urgently seek medical help. Before the victim is taken to the hospital, it is necessary to fix the limb using a splint made of available material.It is good for the patient to drink plenty of fluids. A lotion from a strong solution of potassium permanganate should be applied to the bite site. If signs of an allergic reaction appear, it is necessary to take antihistamines. Prevention of spider bites. When spending the night in nature, you should use protective canopies to fence sleeping places. Before going to bed, it is recommended to carefully examine the sleeping bag and tent, room, sleeping place. Before putting on clothes. or shoes during outdoor recreation, they should be carefully examined and shaken out.You can not walk without shoes on forest glades and in the habitat of spiders. In most cases, spiders attack a person in self-defense, therefore, first of all, you should not take spiders in your hands, play with cobwebs, stir up their home. Subject to these simple recommendations your life and rest will be safe. State Institution “Lugansk Republican Health Center” LPR

What do spider bites look like?

Spider bites are different and have their own specific appearance. What to do if bitten by a spider at home, on the street or in the forest:

Determine the type of individual.
Treat the bite site.
Go to the hospital.

Each arthropod has its own characteristic bite. What a spider bite looks like in reality, we will consider further.

Cross

The bite of the cross spider is almost harmless, except for the feeling of discomfort in the affected area. The poison used by the predator has a low concentration and is not able to paralyze or kill a person. A spider bite outwardly looks like a white spot, edged with a red ring.

The first symptoms are:

burning at the site of injury,
joint aches,
light dizziness.

The human body removes toxic substances in 24-48 hours, after which the symptoms disappear, a slight swelling remains at the site of the bite.

Tarantula

A tarantula bite is dangerous only for people with allergies. They have:

intense fever,
local edema,
severe pain,
numbness,
rash.

Hermit

If bitten by a hermit spider {amp} amp; # 8211, the first 5-6 hours the symptoms practically do not bother, then

arise:

severe pain at the site of the bite,
headache,
nausea.

Hermit venom is very dangerous because it causes tissue necrosis. The skin turns red and over time a bubble appears, which bursts and characteristic ulcers are formed, developing into a gangrenous scab.

House Spider

The bite of a house spider looks like two small red spots. This type is safe and does not cause serious consequences. If bitten by a house spider, apply a cold compress. In case of swelling and redness, take an antihistamine (according to the instructions). In most cases, symptoms of a spider bite go away after a few hours and do not require a doctor’s call or hospitalization.

Tarantula

The concentration of the poison is very low, so the bite of the tarantula does not cause serious harm to humans.The main task of the tarantula is to paralyze the victim. The lesion looks like two small bleeding spots with some redness around it.

Karakurt

The bite of a karakurt looks like two inflamed small tubercles against the background of a red spot 5-10 mm in diameter. Defeat with karakurt poison, without timely treatment, causes:

high fever,
convulsions,
rash on the body,
fear,
psychological deviations (nervousness, screaming),
hallucinations.

It should be noted that an ant bite is similar to a spider bite both in appearance and in symptoms. Scientists isolate the red fire ant because its bite is fatal in most cases, provided there is an allergy.

How Dangerous

As mentioned above, the most common house spiders (scythefoot, house spider web) do not have teeth or venom to cause you significant harm.

Spiders do not pose a real “physical” threat to humans.This cannot be said about emotional well-being, because it looks scary to most people.

One myth worth debunking is that the poison of a scythe leg is strong enough to kill a person, but their fangs are too weak to penetrate the skin. There is no reliable evidence that poison can harm a person.

If not provoked, dangerous arthropods will not want to bite. But when you accidentally put your foot in the shoe, where they hide, they will defend themselves.90,016 9,0003 90,000 Ugly Spider Facts You’ll Hate To Read About! … Damn it

You can’t comb the spider bite. This will lead to the development of a purulent process when an infection enters the skin.

It is pointless to cauterize or cut the skin with a bite, it does not have serious consequences. This is just additional trauma.

To date, no deaths have been reported from a cross bite. But in some cases, after recovery, soft tissue necrosis is observed at the affected area.

Be careful in nature. Remember that the spider-cross will never attack a person itself. Do not provoke a bite, and if affected, take measures to prevent complications.

Spiders are widespread throughout the globe, only they do not live at the North Pole. There are more than 30 thousand species of these arthropods in the world, more than 2 thousand species are cross spiders. On the territory of Russia, there are no more than 2 dozen types of crosses.Like all living things, spiders defend themselves from danger using their poisonous teeth. Sometimes people become victims of spiders, and for some, a spider bite turns into serious complications. What kind of insect is a spider-cross, and is it dangerous for humans (see)?

You can meet a cross-spider both in nature and in a person’s home. The spider chooses dark, damp shelters, where it is easiest for him to hide. The arthropod is predominantly nocturnal, during the day it hides not far from its web.As soon as prey gets into the web, the trapping thread begins to vibrate, and the spider immediately rushes towards its prey.

Dangerous spiders that are found in the Crimea

Consider which arthropods should be feared and what to do if you are bitten by a poisonous spider.

Tarantula

Tarantula is the largest representative of arachnids in Crimea. Its dimensions are more than 3 cm in length. Inhabits arid regions of the steppe part of the Crimean Peninsula. During the heat, it hides in a hole, the depth of which can reach half a meter.The Crimean tarantula feeds on beetles, insects, caterpillars, grasshoppers. The tarantula does not attack first, but, on the contrary, hides in a burrow, barely catching the vibration of the earth.

Note: the bite of a tarantula is not dangerous for human life. It feels like a wasp sting. The site of the bite swells, but over time, the swelling disappears.

Salpuga (phalanx spider)

The salpuga spider is not inferior in size to a tarantula. Its yellowish-gray color and long legs are terrifying. Inhabits the foothills and on the South Coast.

Important! The danger is a large spider that is able to bite through the skin. A small spider cannot do this. The bite of a solpuga causes a burning pain that soon disappears

Arthropod is not poisonous. The main danger lies in the fact that the spider’s chelicerays store the remnants of the diet – rotting particles of the flesh of its victims. When bitten, they enter the bloodstream and can cause its infection and inflammation of the bite site

The bite of a solpuga causes a burning pain that soon passes.The arthropod is not poisonous. The main danger lies in the fact that the spider’s chelicerays store the remnants of the diet – rotting particles of the flesh of its victims. When bitten, they enter the bloodstream and can cause infection and inflammation of the bite site.

Karakut (black widow)

The most dangerous spider from all living in Crimea is, of course, the Black Widow – a spider whose habitat is high dry grass. The male karakuta grows up to 7 mm, the female is slightly larger. A distinctive feature is the four red dots on the back.After mating, the female devours the male, hence the name.

Need to know! A black widow bite can be fatal. The venom of this arthropod is 15 times stronger than that of a rattlesnake. However, when bitten, the spider does not inject the entire dose into the victim’s body, but only a part. Thanks to this, the victim manages to survive.

Bite symptoms:

increasing pain with an increasing effect
dizziness
limb numbness
panic fear
vomiting
convulsions.

What to do if bitten?

Not later than two minutes after the bite, this place should be cauterized with a hot match. This should be done quickly, until the poison has spread throughout the body.

Agriopa spider

This spider grows up to 1.5 cm. Because of its color, it is often called a wasp spider or a zebra spider.

Agriopa venom is not life threatening, but the bite itself can cause a lot of trouble. In particular, allergy sufferers and people with weakened immune systems can suffer from it. In some cases, an abscess may form at the site of the bite, accompanied by further tissue necrosis.

Symptoms of an agriopa bite:

sharp burning pain, like a bee sting
instant swelling and redness of the skin area

What to do?

First aid is not required

Particular attention should be paid to children and allergy sufferers. If you feel worse, you should seek medical help

First aid for a spider bite

Fatal outcomes as a result of a spider attack were not registered, but this does not mean that the victim had a bite arthropod need no help.In such cases, proceed as follows:

The bite site should be washed with warm soapy water to wash off microparticles of dirt from the skin, and to prevent infection from entering the wound.
It is recommended to apply a cold compress to the affected area, ice or a bottle of cold water will do. The cold will help reduce painful sensations and relieve the resulting swelling (see).
In case of pain in the head or when the temperature rises, it is better to give the patient a Paracetamol tablet.
If an allergy occurs, the victim should be given an available antihistamine.
People with allergies after a cross bite should be provided with complete rest and immobilization. Before the arrival of the doctor, a sick person is intensively watered with warm liquid.
The bite site must not be cauterized with hot objects, much less cut the wound. These actions threaten the penetration of pathogenic bacteria into the affected skin surface and the development of purulent inflammation.Also, the wound should never be combed.

Important! When a spider attacks a child, it is necessary to seek medical help immediately, since the spider’s venom is toxic to young children.

Is the wasp spider dangerous

Argiope spiders have been seen by every second of us, this is not a wonder. And therefore, everyone is worried about the question of whether the bite of this arachnid is poisonous or not.

In principle, all arachnids are venomous.

Therefore, even without laboratory findings, it is safe to say – yes, argiope is poisonous. It is with poison that he pacifies prey. For insects, the components that make up the poison are lethal. And what about the man?

His bite is as dangerous as the bite of any other insect, such as a wasp or bee.

What to do if bitten by a wasp spider:

treat the bite site with hydrogen peroxide;
after applying any ointment to the wound, the action of which is aimed at relieving the inflammatory process;
take an antihistamine.

By the way, the venom of this spider consists of polyamine toxins, which may be used as therapeutic agents in the future.

Video

Sources

https://www.syl.ru/articlekoto-argi200/p : //libertempo.ru/argiopa-bryunnixa-ili-pauk-osa/https: //beetlestop.ru/pauk-osa/

man

Although a spider with yellow stripes on its back belongs to the category of poisonous, it does not pose a great danger to humans.Firstly, he is afraid of people and will never be the first to attack, rather, he will run away or fall to the ground and pretend to be dead. Secondly, argiope is not able to bite through human skin in order to inject poison.

But if you take a wasp spider with your bare hand, an unpleasant and rather painful bite is guaranteed. The redness and itching of the stung area go away rather quickly. In allergy sufferers, the reaction can be more violent and unpredictable – from severe swelling of the bite site to fever and swelling of the respiratory tract.

Therefore, it is better to stay away from the beautiful and insidious arthropod. In a garden, a flower garden, he has no place at all. But if you meet in the forest – let him live!

Video about the wasp spider:

The black fathead is sometimes called the ladybug spider. It really resembles this bright insect: on the red or orange background of the abdomen, it has four black spots in the white rim.

However, only the male looks so impressive. The female of the black fat head, although larger, is less brightly colored.It is usually velvety black, sometimes with yellow elements on the front.

Steps

Poisonous Spider Detection

Determine if your hand is crawling.

When it comes to identifying a spider, the first step is to rule out the brown recluse spider. It is the most dangerous spider in the United States and is most common in the Southeast and Midwest. A brown recluse bite can lead to infection and may require medical attention.Here’s how to tell if the spider you find is a brown recluse:

Do your research to find out the type of spider.

Memorize or write down the appearance of a spider, and if you have time, check the global spider catalog, the online arachnology magazine and other expert Internet sources to find the spider you need and compare it with images of other species.

WikiHow also has helpful articles on spiders.More information can be found in the articles “How to identify a garden spider”, “How to identify a barn spider”, “How to identify a red-back spider”, “How to recognize a tarantula spider”.

Allowance for Other Basic Factors

Make sure it is indeed a spider. Many people think that spiders are insects, but in reality this is not at all the case. To make sure that the creature you meet is indeed a spider, you should pay attention to the following:

Two segments of the body. Unlike insects, which have three body segments, spiders have only two.Eight Legs Do not confuse antennae and legs. Lack of wings. No spider has wings

No matter how much a creature looks like a spider, if it has wings, then it is not a spider.

The spider (lat. Araneae) belongs to the arthropod type, arachnids class, spiders order. Their first representatives appeared on the planet about 400 million years ago.

Reproduction of argiopa

The mating period begins immediately after the moult of the female, which precedes puberty.At this time, the covers of her chelicerae are still soft. Everyone knows the sad fate of the male karakurt spider (black widow). He is simply eaten by the female immediately after mating, thereby increasing the chances of survival of her offspring. In the case of agriopa, we see a similar situation.

In July, at the edges of the cobweb, as a rule, you can see the male, awaiting the last molt of the female. As mentioned above, one pair of his limbs has been transformed into bulbs. In the process of fertilization, one of them falls off.If the male manages to hide from the female, then he can mate with another female.

Eggs of Argiope Brunnich lays in a large cocoon (pictured above), which resembles the structure of a plant capsule. It is located near the cobweb. The spider is fertile, the number of eggs laid at a time reaches several hundred. At the beginning of autumn, young spiders are born. They leave their cocoon in a rather peculiar way. Juveniles climb hills, then release a long thread and, with a gust of wind, are carried away with it.Thus, the species settles in natural biotopes. The full life cycle of this type of spider is one year.

In the next photo you can see the spiders just emerging from the cocoon.

Lifestyle

Night hunter, predator, hermit, indefatigable worker – these are perhaps the most significant characteristics of a cross of nature.

Potential victims are small insects, which our hero catches with the help of a wheel-like web, placed almost vertically. It is very sticky. Flies, mosquitoes, aphids, once caught in the net, stick tightly, and when trying to get out, they get even more entangled.

Every night the spider works – examines the nets, weaves new ones. If someone too large, for example, a bumblebee, is caught in the snare, the spider prefers not to get involved and breaks off the web.

Interesting! In weaving trapping nets, the cross-spider is a virtuoso.This “talent” is at the genetic level. And no matter how many networks are compared, they are all made according to the same principle. Exactly 39 thick threads-radii diverge from the center, 35 turns of sticky web are fixed on them in a circle. Accordingly, the attachment points are always 1245. This is such a spider arithmetic!

Features of spider hunting

A spider with a white cross on its back hunts from an ambush. He does not sit on a cobweb, but hides in a special shelter, usually among dense foliage.To the lair from which the cross is watching. The slightest hesitation of the thread – the hunter is right there.

The spider holds the entangled insect with its leg jaws. To immobilize the victim, it pierces the chitinous cover with sharp chelicera, injects poison. After that, it swaddles the prey with a bundle of cobwebs. In addition to poison, the spider injects a digestive enzyme into it, which literally digests the insides. The fact is that the spider’s digestive system is capable of absorbing ready-made nutrients, and the digestion process itself occurs remotely, in fact, inside the victim’s body.

After a while, the spider-cross again approaches its prey to enjoy lunch.

Interesting! This is a rather gluttonous arthropod. Every day, the spider eats up to a dozen insects, and it can catch several hundred! If there is a lot of loot, it leaves it in reserve. In this case, the victim is only paralyzed and wrapped in a cocoon, digested as needed.

Basic Instinct

The mating period begins towards the end of summer. Females of the cross behave like real “black widows” – after fertilization, they eat their partner.In autumn, the female lays eggs (about 300 eggs), around which she weaves a dense cocoon of soft web. For some time she wears it on herself, then hides it in a secluded place, attaching it to some surface. Then he dies.

Juvenile spiders appear in the spring of next year, but they reach sexual maturity only after wintering, the next summer.

Interesting! The web is not only a hunting device, but also a means of transportation for spiders. The arthropod throws out a light thread and is carried by the wind.In this way, they cover a distance of up to 400 km.

The wasp spider is poisonous or not

The arthropod has poisonous glands in which a toxic substance is produced. When it enters the victim’s body, it causes muscle spasm, immobilization. The poisonous bryunnich does not differ in an aggressive disposition, does not attack unnecessarily. For a person, her presence nearby does not pose a danger.However, if the argiop feels his own life threatened, the attack will follow.

Due to its unusual color, the wasp spider is kept at home as pets. They live in specially equipped aquariums and feed on insects. You should feed every other day. up to 1.5 years.

The karakurt spider is one of the most dangerous creatures on earth. Despite its small size and non-threatening appearance, the poison of karakurt is 15 times stronger than the venom of a rattlesnake and 50 times stronger than the venom of a tarantula.For a horse or camel, the bite of a karakurt is often fatal.

The karakurt spider is one of the most dangerous creatures on earth

Without surgical medical intervention and professional assistance, a meeting with a person can also end in death, although such cases are extremely rare. The black spider evokes mystical associations due to the presence of 13 bright red spots on the body and cannibal family traditions. Kalmyk shamans use a dangerous creature in some rituals.There is a widespread belief that karakurt live only in deserts and do not pose a danger to residents of the central and even southern steppe and forest regions, but this is not the case. Recently, the migration of biting “robbers” to the north has been evident, and climate warming has led to the fact that karakurt are registered in regions where they have never been observed before.

The poisonous spider karakurt belongs to the order of spiders of the family of snake spiders from the genus of black widows. Translated from the Turkic language, the name literally translates as a black worm.The Latin name Latrodectus tredecimguttatus reflects external signs – 13 points on the back and the essence of a spider (biting robber). Like a karakurt, which is sometimes called a steppe spider? In size, the spider belongs to the average arachnids. The size of the male is 4-7 mm, the female of the karakurt is 2-3 times larger and can reach 20 mm. The body of the eight-legged spider is black, with a pronounced abdomen. On the upper side of the abdomen, both the male and the female have red spots or dots. On the lower part of the abdomen, a clear scarlet pattern is visible, similar to the outline of an hourglass.The point on the abdomen often has a snow-white halo. Adults (males) can be completely black. Karakurt is a predator that feeds on insects, for the capture of which the cobweb is used.

Despite its small size and non-threatening appearance, the poison of karakurt is 15 times stronger than the venom of a rattlesnake and 50 times stronger than the venom of a tarantula

White karakurt, also belonging to the snake spider, has a white or yellowish color. There is no hourglass pattern and no spots on the body, but there are 4 indentations forming a rectangle.White spiders are much less poisonous, their bite is not dangerous for people, although the poison of the white karakurt is similar in its toxicological properties and characteristics of its effect on the human and animal body to the poison of a black widow. White karakurt can be found on the territory of Russia and neighboring countries, but the main habitat is located to the south – on the territory of North Africa, the Middle East, and also in Central Asia

domestic resorts

Karakurt are distinguished by fertility, in the southern regions there are periodic surges in the birth rate, which entail an increase in the number of victims among people, the death of livestock.Poisonous spiders in Kazakhstan and Crimea annually attack dozens of people, but severe consequences are extremely rare. The female lays over 1000 eggs per year, which are placed in a protective cocoon. The spiders that have been born continue to live inside the cocoon and only emerge from there next spring. Sexual maturity occurs in 2-3 months after the spiders leave their original home. Eggs are laid in pits in the ground or in rodent burrows. Fertilization occurs during the hottest months of the summer.After mating, the female karakurt eats the male, although there are exceptions – for unknown reasons, the female can either destroy the male before mating or leave him alive after fertilization.

Huge spider

This story happened to me in 1995. Then I was still young – the wind was blowing in my head. I didn’t really work, but was making fun of the European-quality repairs. As the coins rattle in my pocket, I drank wine for a week. Then I again found myself the same job …

And one day early in the morning I was sitting on the landing near my apartment and smoking a Magna cigarette.Such a tobacco brand has not been produced for a long time. I was not weakly shaken after another binge. I then poured not even a week, but all one and a half. And then I thought to lie down for a day, and then go back to my friend’s boy to ask for repairs. And this boy was famous for his ability to make unique designs of apartment interiors. That is, in each case he made an individual project. Whatever one may say, but had a higher education as an artist-designer …

And now, blowing smoke rings with my mouth, I suddenly noticed a huge spider on the ceiling.It was about a meter in size. Everything inside me went cold. And I immediately remembered my neighbor from apartment No. 7 on the floor below. Rumors around the yard were that he was some kind of geneticist. Whether it’s true or not, I can’t say. But he looked like a representative of the intelligentsia. All the time he wore a blazer suit with a tie with a black briefcase. His name, in my opinion, was Roman Alexandrovich. He came to our house in 1994 and lived alone, without a family. And then I thought that he was doing some dangerous experiments at home, that he had spawned genetic mutants.And now you don’t know how to get out of the house …

Having extinguished my cigarette butt in a can of canned food, with fear in my soul, I began to go downstairs to the mad scientist’s apartment. Bending down, I ran the section of the path under the spider. Then, standing at the front door, he rang the bell. The neighbor opened right there, apparently, was going, as usual, at this time to work …

-What are you, you moron, for the experiments put? – I was in earnest boiling angrily and splashing saliva. Roman Alexandrovich was taken aback and opened his mouth in confusion because of a misunderstanding of my behavior towards him.-Come here, take a look. I walked away from the door of his apartment and pointed to the arthropod monster. The neighbor walked out onto the landing and looked in a given direction. And then, with an open mouth and a genuinely uncomprehending look, he turned to me.

– Can’t you see what? – I asked thoughtfully. Roman Alexandrovich shook his head negatively …

“Squirrel!” – I realized. One of my acquaintances had such an attack right in front of me. Only the brownie came to him, and not the spider crawled.As a result, his parents took him to the city drug treatment …

-Okay, neighbor, sorry. I’m here myself a little … – I just have to sigh sadly and hang my head down guiltily.

– Everything is fine! – To pay tribute to the sincere friendliness of this man, who only smiled at me affectionately, kicking out the evil ember of conflict that suddenly jumped out at our feet … the ceiling.And the neighbor closed the front door behind him …

Many years have passed since then. Roman Alexandrovich has not lived here for a long time. That feeling of shame from that shameful situation in which I found myself turned into a not very pleasant memory. But for a long time I still tried not to be seen by this person. But he gave up alcohol forever. Now I have my own family: a wife, a son, who is now trampling on army boots, and a daughter who studies at the institute as a lawyer …

Black and green spiders, harmless to humans

man, we decided to focus on the following families:

brownies;
cross fittings;
horses;
side walkers.

The brownie is a forest spider that has been living in human dwellings for many hundreds of years. These individuals of yellow-brown color feed on house insects, therefore they can be called apartment orderlies. Of course, the very presence of spiders with a skull on their back does not advertise the cleanliness of the owners too much. On the other hand, there is a popular belief that a brownie means money well-being.

Cross – black spider with white stripes on the back, forming a kind of cross. Often, the spots are rather yellowish.The males of these black and white spiders are much smaller than the females. They have the ability to weave large webs and have a strong appetite. In one sitting, an individual can eat up to eight insects. For a man, a spider with white spots on the back is perfectly safe. The maximum harm from them is a slight burning sensation for a short time.

The horse is a black spider with white stripes, which, however, can have almost any color. The special structure of the body and legs, as well as a well-developed internal hydraulic system, allow him to jump long distances and climb vertical smooth surfaces.Such a spider with a red belly is a nightmare of many insects. The horse knows how to weave a cocoon from silk thread for the “maternity hospital” of his female. Almost the only one of all types of spiders that does not eat their own kind. This nobility deserves special mention.

Bokokhod is a green-backed spider capable of changing colors depending on the circumstances. For an active hunter, which he is, this is a great help. Just now there was a very noticeable spider with a white belly – suddenly it disappeared.Where to? Take a closer look and barely see a spider with a green belly among the plants. Etc. This spider with a white back, which knows how to turn yellow if necessary, got its name from its mode of movement. Outwardly, it resembles the gait of a crab.

Regardless of who bit you – a poisonous tarantula or a harmless spider with black and white paws – you should immediately disinfect the affected skin area. If a trouble happened in nature, and a person instantly became ill, you need to see a doctor as soon as possible.In such cases, the alarm is never false. You can get more interesting information about the modern classification of spiders on the website of our company in Moscow.

I think these creatures could easily destroy the entire population of our planet. They are smart, cunning, resourceful and incredibly poisonous. Possessing a large number of limbs, unlike humans, these creatures are able to move faster. Also, they are able to weave skillful traps that each of us fell into. But seemingly such ideal plans to take over the world fall apart due to their size.Nature decided that they should not be larger than a human hand.

Guess who will be discussed in this top?

That’s right, about the spiders. Quite dangerous creatures, aren’t they? Humans are very lucky that these creatures are so small. Indeed, even if they were at least the size of an ordinary cat, I think there are few who would now remain on earth, except for these poisonous arthropods.

Spiders have even been identified in a separate class by phenotype. However, their almost unique properties, I think, also deserve this separate group.

And now, let us prove our thoughts with facts. Top 10 most dangerous and poisonous spiders on the planet!

He is also called golden or golden, although judging by the consequences of meeting him, he is not such a “golden” spider. He lives mainly in Europe. Its size is very small, up to one centimeter in length. These arthropods build their houses like a bag, elongated like a pipe. Sometimes they can sit inside the house. Very often, their bites are misdiagnosed – they are mistaken for the bite of a brownish recluse spider.These bites are always clinically dangerous. After them, severe pain appears and a necrotic wound develops, of course, not as quickly as in a hermit spider. A yellow spider can only bite because of a sense of danger. Therefore, if you are going on a trip to European countries, be sure to remember what the Poisonous Spider Sak looks like, and do not make him angry when you meet.

Disgusting Spider Facts That You Won’t Read About!

It would seem, what is so terrible about a spider – a small insect that hides in the corners and feeds on flies? However, most people instinctively dislike and fear spiders.Arachnophobia – fear of spiders – is one of the most common human phobias. And, as it turns out, not without reason: despite their modest size, spiders can prove their strength even to the king of nature – to man.

The web is one of the most durable materials in nature

People are often frightened when they accidentally bump into a web with their hand, perhaps because they instinctively feel its strength and strength. Scientific research shows that spider webs are as strong as steel! Its threads are able to stretch five times without breaking.And one of the types of spiders knows how to weave a web, which is ten times stronger than Kevlar in strength. So the military could save a lot of money by using the spider web to make body armor!

Tarantulas can shoot poison needles

Tarantulas are large spiders covered with hairs that make them even more repulsive in human eyes. There are many legends about the deadly bites of a tarantula, but they do not correspond to the truth: tarantulas are not too aggressive creatures, and will not bite if they are not attacked, and their bite, although painful, is no more unpleasant or dangerous than the bite of a wasp …But tarantulas have another, much more terrible weapon. If you show aggression towards him, he, turning his belly to the source of danger, shoots a bunch of poisonous hairs in his direction – thin as threads and sharp as needles. Digging into the victim’s skin, these hairs cause severe irritation. The only way to get rid of them quickly is to use duct tape as an emergency epilation strip.

Scientists milk spiders for venom

The study of spider venom is required for both the development of antidotes and other scientific experiments.Therefore, scientists keep spiders in laboratories and periodically milk them in order to obtain a valuable substance. But milking a spider is not so easy – much more difficult than, for example, a snake. To receive a portion of the poison, the spider is beaten with a weak discharge of electric current. But that’s not all. After such an electric shock, spiders often vomit, and the poison, spoiled by spider vomit, is not suitable for experiments. Therefore, scientists have to either carefully dose the discharge, or cleanse the spider’s mouth of vomit, and only then extract the poison.This process is very dangerous and time-consuming: to get 100 grams of poison, the procedure has to be repeated 50 to 100 thousand times.

A spider is able to eat prey several times larger than itself

Usually spiders prefer small game such as flies or mosquitoes. But usually the spider web is much larger than is required to catch such game, and because of its strength, very large creatures sometimes get entangled in it – birds, bats, snakes and lizards. In this case, the spider is not lost – it wraps up the unexpected prey in a web more tightly, diligently pumps it with poison, and then begins to eat – slowly and with pleasure.

Before eating, spiders transform prey into a liquid substrate

The spider’s digestive system is very imperfect, so the spider is not able to eat solid food, and it liquefies its prey. The poison secreted by the spider not only immobilizes the prey, but also turns its insides into a liquid gruel, which the spider sucks out, saturating. The spider wraps the remaining hard shell in cobweb threads, like in a garbage bag, and throws it away.

There are about 45 thousand species of spiders on Earth

The first spider remains discovered by archaeologists belong to an animal that lived 420 million years ago.It is no surprise that over such a long time, spiders have managed to become one of the most diverse families on the planet. The smallest spider is less than 1 millimeter in diameter, and the largest is over 30 centimeters. They demonstrate excellent mimicry abilities – for example, there is a species of spider that looks like an ant, and the pattern on the back of another species resembles bird droppings. Their hunting habits are also quite varied. Not all spiders sit in the net, waiting for their prey – some pounce on their prey from an ambush, others shoot cobweb threads from their forepaws, stopping the game on the fly.Most spiders are absolutely harmless, but there are also very poisonous species, whose venom can kill a person in a matter of minutes. So, when dealing with spiders, it will not be superfluous to consult a guide about the habits and characteristics of the species you meet.

Some spiders are capable of killing humans

Almost all spiders are poisonous, but the poison of most of them is dangerous only for small insects. However, some are quite capable of killing a person with their poison. Most often, people suffer from the black widow – a spider that is very widespread on the planet, and has a habit of stretching its webs in shady places, including near human habitation.No less dangerous are the Australian red-backed spider and the brown recluse spider, common in the United States. Of the spiders widespread in Russia, the tarantula is especially dangerous – if it bites, you should immediately consult a doctor, otherwise the case may end in the death of the victim.

Different spider bites have different symptoms

In case of a poisonous insect bite, help should be provided immediately, but how can you help if you do not know what happened? Meanwhile, due to the wide variety of spiders and, accordingly, their venoms, it is not easy to identify a spider bite without habit.Some spiders use neurotoxins to attack – in this case, sweat flows from the victim, the heart beats intermittently, in some cases muscle spasms begin. Strong spider venom can cause temporary paralysis. Hermit spider venom contains a hemotoxin that destroys red blood cells and causes tissue necrosis, which, if not consulted in time, can lead to limb amputation.

Spiders have their own social life

Although most spider species are solitary, some of them prefer to live in colonies like insects.Several thousand such spiders gather in one place and cover vast areas with their nets. Not only flies fall into such snares – birds and even small mammals get entangled in huge sticky nets, turning spider colonies into creepy animal graveyards. But the worst thing happens if a flood begins in places of mass concentrations of spiders. In this case, hundreds of thousands of spiders gather on small heights, not affected by the water, completely entwining them with a cobweb that does not let anything alive.A similar terrible spider occupation, when many hectares of fields turned into swarms of cobwebs, happened in 2020 in the vicinity of Memphis, and in 2016 – in Tasmania.

Funnel spider can bite off a human nail

Funnel water spiders are inhabitants of Australia, which is famous for many dangerous species of animals. They are sometimes called “leg-crippling spiders” – and for good reason. The size of a tarantula, these spiders are highly aggressive, especially during the mating season.At this time, they run around their territory in search of females and viciously attack anything that does not resemble a spider – including human legs. Funnel spiders have powerful jaws, with which they bite into flesh with such force that they can easily bite or even bite off a person’s toenail. They do not want to let go of their victim, so the victim has to literally tear off the aggressor from himself with meat. So if you are thinking of a trip to Australia, don’t plan it during the spider mating season!

Never cross the road to the Brazilian vagrant spider!

This spider is perhaps the most dangerous on the planet.Firstly, as his name implies, he does not sit still, but wanders around his territory in search of victims. Secondly, he is very aggressive and never runs away from danger, preferring to attack, preferably first. And thirdly, it is one of the most poisonous spiders on the planet. Its poison is a powerful neurotoxin that causes incredibly severe pain, and in men, it also causes priapism – a long and painful erection, which without medical assistance can result in tissue necrosis of the most sensitive part of the male body.

The largest spider on the planet runs pretty damn fast

Until 2001, the largest spider in the world was considered the goliath tarantula. But in 2001, in the jungle of Laos, scientists discovered an even larger species, dubbed the “giant hunter spider.” Its length exceeds 30 centimeters! In addition to its size, it is known for its incredible speed: thanks to its long legs, it runs much faster than normal spiders. He is not too aggressive, but if he decides that you are attacking him, he will not run away, but instead will move at you (running!) Or jump from the ceiling on your shoulders.Most likely, the impressions received from such an attack will haunt you for the rest of your life.
The spider can be found almost everywhere
Due to its diversity, spiders inhabit all regions of the planet, with the exception of the polar regions. Moreover, unlike most wild animals, they are not at all embarrassed by the neighborhood of people. Rather, the opposite is true: since flies, mosquitoes, midges love to crowd around human housing, be it a secluded hut in the forest or a skyscraper in the center of a metropolis.So, no matter where you live, you cannot avoid meeting spiders.

Reproduction of spiders is as disgusting as they are themselves

In family life, spiders reign solid matriarchy and cannibalism. In most species, the female is much larger than the male, therefore it is she who dictates the conditions for mating. And the conditions are simple: at the end of intercourse, the lady bites off the gentleman’s head. In many species, the unlucky father, moreover, becomes food for future children: the mother either eats him or lays eggs in his mortal body.To avoid such a fate, in some species of spiders, males, having mated, leave their genitals in the body of the female and run away, saving their lives. In a word, disgrace, and nothing more!

The most unusual species

Nature sometimes dresses spiders in such bizarre forms that one has only to wonder where so much imagination comes from. Here are just a few examples.

Peacock Spider. It differs primarily in its bright color, reminiscent of a peacock feather. The size of an individual is limited to five millimeters, so it is not easy to consider it.Only males have this color.
Crab spider. Outwardly it resembles a crab. In addition, this unique creature can move, as well as a crab from side to side and back forward. And the ability to change color makes it invisible against the background of the habitat.
Dolomedes. Another name for this spider is “fish”, as it lives near water bodies and feeds on small fish, which do not exceed itself in size.
Spider – whip. This creature rather resembles a thin twig and is completely unlike its counterparts.The species was named Colubrinus, which means serpentine. This is how nature created it for camouflage. Such a predator sits in the cobweb, and the victim thinks that these are the twigs stuck to the cobweb and is not at all afraid of him.

What do spiders eat?

Spiders are quite original creatures that feed very interestingly. Some species of spiders may not eat for a long time – from a week to a month or even a year, but if they start, then little will remain. Interestingly, the weight of food that all spiders can eat during the year is several times more than the mass of the entire population living on the planet in our time.How and what do spiders eat? Depending on the species and size, spiders forage and eat in different ways. Some spiders weave a web, thereby organizing ingenious traps that are very difficult for insects to notice. Digestive juice is injected into the caught prey, eating away at it from the inside. After a while, the “hunter” draws the resulting “cocktail” into the stomach. Other spiders “spit” sticky saliva while hunting, thereby attracting prey to themselves.

Insects form the basis of the spider’s diet.Small spiders happily eat flies, mosquitoes, crickets, butterflies, mealworms, cockroaches, grasshoppers. Spiders that live on the surface of the soil or in burrows eat beetles and orthopterans, and some species are able to drag a snail or an earthworm into their home and eat them calmly there.

The queen spider hunts only at night, creating a sticky cobweb bait for unwary moths

Noticing an insect next to the bait, the spinning queen quickly shakes the thread with her paws, thereby attracting the attention of the victim.A moth happily winds around such a bait, and when it touches it, it immediately remains hanging on it

As a result, the spider can calmly attract it to itself and enjoy its prey.

Large tropical tarantula spiders happily hunt small frogs, lizards, other spiders, mice, including bats, as well as small birds.

A species of spider like the Brazilian tarantula can easily hunt small snakes and snakes.

Aquatic species of spiders get their food from the water, catching themselves with the help of a web of tadpoles, small fish or midges floating on the surface of the water.Some spiders, which are predators, due to the absence of prey, can also get enough of plant food, which can be attributed to pollen or plant leaves.

Hay spiders prefer cereal grains.

Judging by the numerous notes of scientists, a huge number of spiders destroy small rodents and insects several times more than animals living on the planet.

Types of spiders, names and photos

Scientists have described more than 42,000 species of spiders.On the territory of the CIS countries, about 2900 species are known. Let’s consider several varieties:

Blue-green tarantula (Chromatopelma cyaneopubescens)

one of the most spectacular and beautiful spiders in color. The abdomen of the tarantula is red-orange, the limbs are bright blue, the carapace is green. The dimensions of the tarantula are 6-7 cm, with a leg span of up to 15 cm. The spider is native to Venezuela, but this spider is found in Asian countries and on the African continent.

Despite belonging to tarantulas, this species of spider does not bite, but only throws special hairs located on the abdomen, and even then in case of severe danger.

For humans, the hairs are not dangerous, but cause minor burns on the skin, similar in effect to a nettle burn. Surprisingly, female chromatopelms are long-livers compared to males: the life span of a female spider is 10-12 years, while males live only 2-3 years.

Flower spider (Misumena vatia)

Belongs to the family of sidewalk spiders (Thomisidae). The color varies from completely white to bright lemon, pink or greenish.Male spiders are small, 4-5 mm long, females reach sizes of 1-1.2 cm.

The species of flower spiders is distributed throughout European territory (excluding Iceland), found in the USA, Japan, and Alaska. The spider lives in an open area, with an abundance of blooming forbs, as it feeds on the juices of butterflies and bees caught in its “embrace”.

Grammostola Pulchra

A species of tarantula that lives in its natural environment only in Uruguay and in the southern regions of Brazil.A rather massive spider, reaching 8-11 cm in size, with a dark coloration and a characteristic “metallic” sheen of hairs.

In nature, it prefers to live among the roots of plants, but almost never digs its own minks. Pulchra often becomes a pet among connoisseurs of exotic pets.

Argiope bruennichi or wasp spider (Argiope bruennichi)

A spider with an unusual color of the body and limbs – in a yellow-black-white stripe, for which it received its name.True, males of a wasp spider are not so bright, and are inferior in size to females: “young ladies” reach a size of 2.5 cm, and together with their paws – 4 cm, but the male rarely grows more than 7 mm in length.

The species is widespread in Europe, Asia and southern Russia, the Volga region and North Africa. The argiope spider lives in meadows with an abundance of grass, on the edges of the forest. Argiopa’s web is very strong, so it is difficult to break it, it will only stretch under pressure.

Apulian tarantula (Lycosa tarantula)

a species of spider belonging to the wolf spider family (lat.Lycosidae). Inhabits the vastness of Southern Europe: often found in Italy and Spain, digs holes half a meter deep in Portugal. The dimensions of the tarantula are impressive – up to 7 cm in length, individuals are usually colored red, less often – in brown tones, on the body there are several transverse stripes of light color and one longitudinal.

Black Widow (Latrodectus mactans)

This is a very dangerous and venomous species of spider. It lives in Australia, North America, and also in Russia.The size of females reaches 1 cm, males are much smaller. The body of the black widow is black in color, and on the abdomen there is a characteristic red hourglass-shaped spot. Males are brown in color with white stripes. A black widow bite is deadly.

A new species of spiders

The scary spiders shown above are unlikely to meet you in Russia. However, in Altai one can meet their smaller counterparts, which were recently discovered on the territory of the Katunsky nature reserve. They live in mountainous areas along with other species of wolf spiders, which seemed to scientists an extremely strange phenomenon.They had never seen different species of these spiders living in close proximity before.

This “handsome man” can be found in Russia

According to scientists, the new species of spiders is very cowardly – when they see a person, they immediately hide under stones. Nevertheless, the researchers managed to photograph them and catch several individuals for study in the laboratory. At the moment, the species does not even have an official name, but after study it will definitely appear.

Arachnids

In the arid regions of Central Asia and Africa, large arthropods live, which are often mistaken for spiders.These are solpugi. According to tracing paper from English, they are also called. But unlike spiders, solpugs have teeth, they do not have spider glands and are not poisonous.

Solpuga is a large animal capable of catching up and killing not only invertebrates, but also small lizards. Chelicerae of large solpugs are so powerful that they can bite through a human nail. No real spider is capable of this. Although saltpugs have no venom, their bite can be very dangerous. On the chelicerai of these arthropods, particles of decaying flesh remain.After being bitten, you can get blood poisoning.

Spiders cause in many, although they are one of the most harmless and useful inhabitants of the planet. Spider lovers consider them “kittens”.

The richness of various species of living creatures in the wild is simply stunning. There are over 35 thousand species of arachnids alone.

And in this article we will consider one of the amazing subspecies, allegedly similar to the wasp – argiope bryunnich.

About the features of appearance, habitat, lifestyle, methods of weaving a web, reproduction, danger to humans and the possibility of keeping at home, read on.

Poisonous spiders

Karakurt Karakurt is a spider with a black body and red spots on the abdomen. Individuals of this species are among the most venomous in the world. Their bite most often entails, but they themselves attack only in cases where they are disturbed. The bite wound is subtle. At the beginning there are local: burning pain, redness, “goose bumps”. Then the general condition worsens, there is severe sweating, chills, headache, nausea, choking, muscle spasm. A bite reaction usually develops within the first few hours.

Tarantula Tarantula has a gray-brown body color, so it is difficult to distinguish in natural ones. The spider is in the steppes and is active only when it goes hunting. His bite does not lead to death, as many people believe, and does not have serious consequences. The main symptoms are itching and severe pain. From unpleasant symptoms, an allergy may develop, and as a result of it, shock.

Hermit Spider This species is extremely toxic to humans. The recluse spider is usually brown or dark yellow, the legs are rather long relative to the body.He lives in Australia and the United States. This type is dangerous in that it is practically invisible, and its bite causes symptoms only on the second day. Itching and a noticeable swelling appear, at the site of which an ulcer gradually develops. The deep layers of the skin are affected, the temperature rises. In case of severe organ intoxication, a lethal outcome is possible.

As soon as a spider bite is detected, a doctor must be called. Before his arrival, you can provide first aid to the victim. First fix the limb.A tire is suitable for this. Then the place above the bite must be tightened with a tourniquet. A potassium permanganate lotion is applied to the bite itself. It is advisable that the patient drinks liquids.

Poisonous spiders of Russia are not such a rare phenomenon. Meeting with them can end in rather big trouble, up to a hospital bed and even death. The latter rarely happens, and even then in the case of untimely or incorrectly provided assistance.

Neither specialists nor ordinary people have and cannot have any disagreements here.Karakurt is the only one of all representatives of arthropods living in the vastness of our country, whose bite can be fatal.

Appearance

Danger to humans is represented only by females reaching sizes of 15-20 mm. They have two distinctive signs that do not allow to confuse karakurt with other representatives of arthropods. There are exactly 13 bright spots or dots on the upper side of the black abdomen. Naturally, there is no time to count them, but the very combination of black with bright spots should serve as a signal for danger.On the underside of the abdomen, there is one equally bright spot in the form of an hourglass.

Habitats

Karakurt are thermophilic. They live in the South Urals, the Caucasus and the Black Sea regions. However, in recent years, the habitat of this spider has spread to the more northern regions of Russia, up to the Moscow region. This is explained by global warming, but more optimistic scientists are sure that this happens only in very hot years, and even then not always.

Consequences of a bite

Karakurt, which has a very strong poison, unlike other spiders, is very aggressive and bites not only in self-defense.

It can attack purposefully, so not only tease, but also approach it with great caution.The bite itself is very painful, and after 10-15 minutes the pain spreads throughout the human body and becomes almost unbearable

headache and dizziness, tremors, profuse sweating, a feeling of heaviness in the chest.

Danger of a cross for humans

A bite of a spider with a cross is no more dangerous for a person than if it were stung by a bee.Feels like an instant sharp injection. A swelling appears at the site of the bite, a small white spot appears in the puncture area, the skin around it reddens, itches. The body is freed from toxins in 24 hours.

More serious symptoms are experienced by people who are allergic to insect bites. They may experience:

headache;
weakness and aches in the joints;
chills;
temperature rise;
edema, including mucous membranes;
burning, tingling of the bite site;
thickening of the skin in the lesion.

Pay attention! Most often, the cross bites a person when he picks him up or an arthropod accidentally gets under his clothes. There were cases when a spider climbed into the tent through an open window.

First aid for a bite

To minimize the effects of a spider bite with a cross on the back, do not neglect first aid. It should be remembered that along with the poison, an infection can get into the wound, which will do no less harm, or maybe even more, than the toxin itself.What should be done first?

Wash the bite site thoroughly with soap and cold running water.
If the swelling is severe, apply a cold compress, ice can be used for a short time.
Take an antihistamine such as suprastin, loratadine, zodak.
After a while, an ointment can be applied to the lesion site to relieve itching and swelling (fenistil, sinaflan).

If the spider bit a child, do not expect a reaction to the poison, see a doctor right away.

photos and lifestyle of a poisonous spider. Symptoms of a spider bite sak

Yellow spider Sak (yellow-sac stabbing spider)

The species was first described by the French naturalist Charles Joseph de Villers under the name Aranea punctoria in 1789. The yellow spider Sak, usually hides, preferring tall grass, cultivated fields, and can also be seen under lying stones, this type of spider does not weave webs. During the day they are in shelters above the ground, in the so-called “sleeping bags” in which there are many holes.This type of poisonous spider is active at night, when it is time to hunt for its prey (snails, insects, and other spiders).

The bite of this spider causes a necrotic ulcer, the symptoms of which disappear within 22-30 hours. The death of tissues is accompanied by dizziness and fever. Saki show aggression only for self-defense, protecting themselves or their offspring, frequent encounters are at haymaking. Despite the danger, they are excellent helpers in agriculture, i.e.because they destroy pests.

Photo and description of appearance

The predatory spider sak is small in size. The body of an individual has a size of only 10-12 mm, in a span of about 25 mm with limbs. Females are much larger than males. The body consists of the abdomen, cephalothorax. Covered with a dense shell. The forelimbs help to grab the victim, hold it in the process of feeding, while having 4 pairs of legs.

The abdomen is bright yellow. The feet are slightly dark in color. The cephalothorax is reddish-brown in color, rather massive.At the sight of a saka spider, attention is drawn to the powerful pointed jaws, rounded at the edges. With this stabbing weapon, the spider breaks the victim’s shell (chitinous cover), and then injects its poison.

Note!
On the head, the spider has 4 pairs of eyes, which are crowded towards the middle, but the spider has poor eyesight. The organs of touch and smell, located on the limbs, help to orientate in the environment. The golden sak spider senses someone else’s presence by fluctuations in the air, smell, cobwebs.

The male saka does not have a pronounced yellow-brown coat, like that of females. The size together with the limbs reaches an average of 16 mm. The main purpose of the male is the fertilization of the female. Then the male dies.

A photo of the saka spider is presented below. You can consider the features of the body structure, color, powerful jaws of a predator.

Yellow spider sak

What does the web look like

Unlike typical representatives of arachnids, this spider does not spread trapping nets in the form of a web.Sak creates a bag of dense threads, into which the victims fall afterwards. This type of cocoon is also weaved after fertilization to lay eggs. Often the entrance to the shelter is covered by a spider web. A predator is engaged in weaving a web at night, during the day it sits in a chosen place.

Benefits and harm to the environment

Fact, some spider species like the smell of gasoline and oil. This explains the desire of arthropods to weave a web near the internal combustion engine of a car, and, accordingly, can lead to a malfunction of the vehicle.

Heirakantium is the owner of the most toxic poison on the European continent, although it is not fatal, it often causes real panic.

Saka bite symptomatology:

bite after a while, accompanied by vomiting, nausea, headaches and fever;
initial burning pains are present, which subside with time;
the bite site turns red (blue) after swelling;
after a certain amount of time, the site of the saka bite becomes blistered.

Symptoms from toxic poison, body aches, general weakness, disappear 24-72 days after the bite. A bite mark can remain for up to 2 weeks.
Attention! If, after these periods of time, a deterioration in health is observed, you should immediately consult a doctor.

Bronzovka is an insect with a shiny chitinous shell, which causes a lot of trouble for flower growers.

Biological characteristic

Speaking in official biological language, argiopa belongs to the family of orb-web spiders.This family is characterized by the manufacture of a large circular fishing net with a pronounced spiral stabilizer in the center. This part of the web is clearly visible in ultraviolet rays, which are distinguishable by many insects, and therefore the stabilmentum is so attractive to various insects and beetles.

Help! Stabilimentum – cobweb threads forming a zigzag pattern.

Appearance

Heiracantium is usually pale in color with a yellowish or beige abdomen, relatively small in size 5–10 mm.Has eight eyes, arranged in two rows, approximately the same width.

Males are distinguished by elongated chelicerae. The oral apparatus is an internal recess, and lateral protrusions are located on the chelicerae.

Eight legs with two claws. The forelimbs are longer and 1.5 times longer than the body of the spider. The shins have a small number of thorn-like growths.

The spider-forming apparatus is represented by anterior and posterior warts. The second often includes an elongated apical segment.

The respiratory system is represented by pairs of lungs and trachea. The spiracle is located in front of the arachnoid warts. The abdomen is oval and slightly pointed at the end.

Appearance

According to the description, the argiope spider really looks like a wasp or a zebra. On the body of the arthropod, the alternation of black and yellow stripes is clearly expressed, however, this is inherent only in females. Males of this species are small and inconspicuous.

A pronounced dimorphism is observed in the spiders argiopa Brunnich. The female has a body size of 15-30 millimeters long, while the male argiope barely reaches half a centimeter.

Spread

Basically, this striped black-yellow spider inhabits the middle and southern regions of Europe and Russia. But recently, due to climate warming, argiopes have begun to be found in the northern regions. There is information that our spider was seen in the Moscow and Nizhny Novgorod regions, and even further north.

Lifestyle

A common colony of argiopa settles in forests or meadows. where there is massive years of potential casualties. The number of one settlement is usually about two dozen spiders.

A yellow striped spider weaves its webs in twilight evenings. He spends no more than one hour making his trap. After the web is woven, its owner is placed in the center of the web and, taking the shape of the letter “X”, awaits the victim.

It should be noted that the trapping net of the argiopa is very beautiful, it is distinguished by the presence of a pronounced circular shape and small cells, through which even the smallest mosquito cannot break through.

Habitat

Distributed in South Africa, East Asia, Australia and practically throughout Europe.
Some species are found on the American continent.

The preferred habitat is shrubs and vegetation, but it is possible to find a spider among rocky terrain.

Rumors of poisonous arthropod bites come in regularly. At the same time, it was noticed that each new signal is not limited to a single case, which indicates the preference of the genus Cheiracanthium to travel in flocks.

Power supply

The zebra argiope spider feeds on those insects that come across in its net.Basically, these are numerous Orthoptera, although various flies or mosquitoes often find themselves in the cobweb. Spiders inject poison into them and entwine them with cobwebs, then they suck the juices from the victim’s body that has begun to dissolve.

Diet and method of obtaining food

Heirakantium – night hunter. Hiding in leaves rolled into tubes, bushes, sometimes among stones, the spider waits for its prey. The signal for a lightning attack comes after the insect touches one of the hunter’s paws.

The diet of heiracantium has not been thoroughly studied, but it is known that this genus of arthropods feeds on small insects (caterpillars, aphids, moths, ticks, etc.)etc.).

Reproduction

The female reaches the age of sexual reproduction after the last molt of her development. During mating, the female wraps a web around the male, and if he does not manage to get out, then his fate is unenviable – he will certainly be eaten.

And then the female will weave a large cocoon, in which she will place her numerous eggs, which she protects with the care of a loving mother.

At the beginning of autumn, the spiders crawl out of the cocoon, and, being attached to the cobwebs, are blown around by the wind, thus creating new colonies of spiders.

Attention! Flying spider webs during Indian summer are, among other things, a way of spreading spiders in open areas.

In other cases, the female can lay eggs, and there are up to hundreds of them in one cocoon, in late autumn, and young spiders hatch and settle already with the arrival of spring. The female herself does not hibernate, but, having made a clutch, dies.

Where is it found?

The genus Heirakantium, to which the sak spider belongs, consists of 194 species, lives in Europe, Asia, Africa, and is found in Australia and America.In the post-Soviet space, a couple of decades ago, representatives of the genus were well known to residents of the southern regions – Central Asia, the Caucasus, Crimea, Krasnodar Territory and Rostov Region, steppe Ukraine. The abnormally hot summer of recent years contributed to the fact that flocks of arthropods began to migrate northward. Now the poisonous spider can be found in the Moscow region, the Volga region, South Siberia, throughout the middle lane.

Interesting! One of the ways of spreading Heiracantium to the north is by migration with vehicles.In search of a safe place, spiders often get stuck in the slots of trucks, there have been cases of settling among the pipes of the fuel system.

Why are they among the ten most poisonous arachnids?

The bite of the yellow sak spider is not as terrible as, for example, karakurt, but its poison is toxic. According to the first symptoms, it resembles the bite of a hermit spider, which not only causes panic in the victim, but also misleads doctors. By the way, most doctors in regions where a dangerous arachnid appeared recently, generally find it difficult to diagnose a bite.

Population and species status

Photo: Yellow Spider

Although people do not encounter them so often, but this should be attributed primarily to their stealth. After all, the species is among the widespread, the population cannot be counted – within its range, yellow spiders are found in almost every field and meadow, often hundreds and thousands of them.

Of course, due to human activity, the number of these fields is gradually decreasing, and some of the living creatures inhabiting them are dying out due to poor ecology, but yellow spiders are certainly not among the species that are threatened by this.Like most other spiders, they adapt well and survive.

As a result, they are among the least endangered species, are not under protection, and are unlikely to ever be – too widespread and tenacious. It is much more likely that over time they will be able to adapt to a hotter climate and expand their range at the expense of the tropics, and also that sooner or later they will take root on other continents.

Interesting fact: There is little pleasant in the bite of a yellow spider, but it is not dangerous for humans, except that it can cause the usual signs of mild poisoning – an allergic reaction, weakness, nausea.After 3-4 hours, everything should go away, and an antihistamine will help to stop experiencing these symptoms.

The yellow spider does no harm to humans – it bites only when attacked and, although poisonous, not enough to harm human health. They are very small and live mostly in wild places. Using stealth, they lie in wait on the flowers of their victims, which may even be much larger than themselves

Is yellow sak good for you?

Despite the fact that yellow saka is dangerous for humans, it is considered a useful predator, since the spider kills more than 2,000 harmful larvae and insects per year, thereby helping people to fight pests.

Is yellow sak dangerous for humans?

The yellow-sucking stitching spider is quite aggressive and often attacks humans. Females protecting their offspring are especially dangerous. The bite of the yellow saka is very painful, of course, it is not as dangerous as the bite of the karakurt, but it often causes a strong allergic reaction.

Unlike many other species of spiders, the heiracantium has sufficiently long and strong chelicera claws, due to which it can break through human skin. The bite can be fatal if there is a serious allergic reaction.Although, fortunately, no deaths were recorded.

Saka jaws are dangerous for humans

Danger to humans is represented by the saka’s jaws, with which he can easily bite through the skin and inject poison. Females are larger than males. Some individuals in a leg span reach 2–2.5 cm, the body itself has a more modest size – 7–15 mm.

The spider is called yellow for the color of the abdomen. It is bright yellow or beige; in some species of heiracantium, a reddish longitudinal stripe is noticeable on the back.The cephalothorax is orange, with a powerful mouth apparatus. Compared to their small size, cheliceral jaws are simply huge, ending in curved claws. With their help, the spider sak bites through the hard chitinous shell of insects and injects poison.

Do argiopes bite?

There is a category of people who definitely need to stick their hand somewhere: in an anthill, in a bee hive or hornet’s nest. Such inquisitive heroes do not ask questions about whether certain representatives of the fauna bite, they can feel everything on their own skin.

For the rest, we inform you that if you stick your hand into the web, intentionally or accidentally, the spider will immediately react and bite. An argiopa bite is quite painful and comparable to that of a bee or a wasp. The fact is that the wasp spider has rather strong jaws, and he is able to quite deeply deepen them under the skin. In addition, one should not forget about its poison.

Many people ask whether Brunnich’s argiope is poisonous or not? Of course poisonous, because with her poison she kills her victims. Another thing is that in most cases this poison is practically not dangerous for a person.

The consequences of inadvertently testing a spider for reaction speed can be different. Most adults have a slight swelling of the skin around the bitten area, which disappears after an hour or two and does not even itch

In some cases, redness and swelling can subside only after a day, and the bite site itself is very itchy.

It’s another matter if a spider has bitten a child or a person with an increased allergic reaction to spider venom or the very fact of the bite. In this case, there may be more pronounced dangerous symptoms:

severe swelling of the bite site;
increase in body temperature to 40-41 degrees;
nausea;
dizziness.

In this case, of course, you need to immediately interrupt the walk and immediately contact the nearest medical institution or ambulance substation, where the person will be provided with competent emergency medical assistance.

Introducing the video of the argiope spider sucking its prey. In the center of the web, the stabilmentum is clearly visible:

Natural enemies of yellow spiders

Photo: Poisonous yellow spider

They are not hunted by too many predators, mainly those that like to feed on spiders, with a digestive system adapted to their poison.

Among them:

crickets;
geckos;
hedgehogs;
centipedes;
other spiders.

It is possible to catch a yellow spider by surprise, and it is quite easy to do this when it is resting, it is unlikely to be able to defend itself against a larger and stronger predator. But you still need to find it, because thanks to its color, as well as translucency, it is almost invisible on the plant.

Most often, young spiders die, still inexperienced and less careful, and not so dangerous – after all, those who want to eat a yellow spider should always remember about its poisonous bite, which can turn a hunter into a victim.On the other hand, he is not very fast and strong, and therefore can be quite easy prey.

Yellow spiders also die in case of an unsuccessful hunt, because bees or wasps are quite capable of killing him, like many other victims – yellow spiders generally tend to hunt animals of rather large sizes in comparison with their own.

They are also in danger from other spiders, including relatives – cannibalism is common among them. Larger spiders are also threatening.Finally, they can die from poison if the land is cultivated against parasites – but in general they are quite resistant to poisons and may remain among the few survivors.

What to do to avoid being bitten?

No one wants to act as a guinea pig and test the symptoms of a bite for themselves. Therefore, you should always be vigilant, especially in places where spiders are likely to stay:

do not touch the unknown arachnid with your hands;
do not check burrows and hollows for unknown objects;
If you find a spider on yourself, it is best to gently shake it off.In no case try to kill the spider while it is on the body;
when working on a personal plot, in a vegetable garden, etc., it is recommended to use gloves;
clean the house and premises more often. Do not create favorable conditions for spiders.

Bite symptoms

One of the main symptoms of a bite is a burning pain that can persist for several hours (the duration varies greatly). The site of the bite quickly swells, redness occurs.In addition, there may be a whole list of symptoms:

90 120 90 121 chills;

itching at the site of the bite, blistering;

nausea and vomiting;

dizziness;

increased body temperature;

headache.

Symptoms are especially acute in people prone to allergies. In most cases, the symptoms of the bite completely disappear after 24-30 hours. Contrary to popular belief, there is no evidence that a yellow saka bite causes tissue necrosis, i.e.Because only one such case is known.

First aid for bites

At the slightest suspicion of a poisonous spider bite, you should call an ambulance and provide the victim with first aid. First of all, it is necessary to wash off the remnants of a toxic substance, slow down the spread of poison in the bloodstream, and stop the symptoms of an allergic reaction. The choice of first aid equipment depends on where the attack occurred. If at home, a home first-aid kit is suitable, if outdoors, you will have to use materials at hand.So:

Thoroughly rinse the bite from the remains of the poison with running, mineral or spring water. Use laundry soap at home.
Disinfect the wound with alcohol, ammonia, hydrogen peroxide, vodka or any alcoholic infusion

Local reactions

Local reactions occur after an attack by any spider. And the inflamed areas are treated in the same way: first they are washed with clean water and soap, then they are treated with a disinfectant solution.

In case of severe inflammation, it can be treated with Bepanten cream, lubricating the affected area with it at least 4 times a day.If the site of the bite begins to pluck, you need to see a dermatologist. In some cases, it may be necessary to administer tetanus toxoid. If tissue necrosis has begun, the necrotic areas are surgically removed.

But what if after a spider attack a rash appears? Most likely, an allergic reaction manifested itself, which can only be weakened with the help of an antihistamine (“Suprastin”, “Eden”, etc.).

Systemic reactions

Treatment of systemic reactions following a spider bite includes:

As with any allergy, drugs are prescribed that alleviate the patient’s condition, stop the development of dangerous conditions:

Muscle spasms

The initial task is to wash off the remains of the poison, prevent it from spreading through the blood, and reduce the symptoms of an allergic reaction.The choice of first aid depends on the location where the event took place. If a spider has bitten at home or in the immediate vicinity, you can use a home first-aid kit, in the wild, use materials at hand.

First aid for bite

In order to prevent the spread of poison through the blood after the bite of a poisonous predator, a tourniquet is applied over the wound or a bandage is made from a bandage, improvised materials.

Bitten by a spider – what to do before the ambulance arrives

These representatives of the order of arthropods can attack an adult and a child, both in the house and in the open area.The bites of many spiders will not cause significant harm to a person – a slight redness on the skin will disappear within a day.

But after an attack of a karakurt or a hermit, a severe allergic reaction, laryngeal edema and respiratory arrest can develop. It depends on the type of arthropod what to do if a spider is bitten, what first aid to give a person.

Even in the absence of symptoms, the victim should be promptly transported to the nearest hospital facility.

Spiders attack humans not only in open areas, but also in residential premises

The effect of poison on the human body

The damage to human health depends on the qualitative and quantitative characteristics of the venom emitted by spiders during bites.The larger the specimen, the greater the danger it poses to humans.

Small arthropods are often simply not able to bite through the skin or produce the amount of poison that can harm an adult or a baby. But such a statement is true only for representatives of one species. Tarantulas are larger than karakurt, but their bites do not cause significant harm to humans.

But after an attack by a hermit spider, lethal outcome is quite possible. Depending on the action of toxic compounds, scientists distinguish two types of poison:

neurotoxic, affecting the central and peripheral nervous system;
hemolytic, destroying red blood cells after penetration into the bloodstream.

Karakurt and brown hermit spider are the most dangerous arthropod species in our country for humans. And tourists and experienced travelers can fall prey to attacks by other arthropods anywhere in the world.

Symptoms

The bites of many, even extremely dangerous spiders are completely painless. A slight swelling or redness that appears on the skin is mistaken for a scratch and does not take any action.

And the symptoms of general intoxication of the body that developed within a few hours are very similar to the signs of any bacterial or viral infection.

Such a clinical picture of articular bites can mislead not only the victim, but also diagnostic doctors.

: Almost all spiders are carnivores. Having lured the victim with a shiny web, they inject a paralyzing poison into it. And when attacking a person, spiders use this method only to protect their own lives.

There are several indirect signs that help a person distinguish a scratch or small wound from a spider bite.After an attack by an arthropod, the following symptoms occur:

the area of the bite gradually swells, and in some cases a pink or red erythema similar to a thin ring forms;
after a few minutes or hours, pain in the extremities occurs, tremors or convulsions may occur;
edema of various localization develops: at the site of the bite, in the upper half of the body or face;
heart rate increases, shortness of breath is felt;
blood pressure may rise and then fall to life-threatening values.

If the victim has a predisposition to the development of allergic reactions, large or small red spots form on the skin. They itch a lot and quickly spread throughout the body. Such symptoms of a spider bite can vary significantly depending on the species of the articulate.

After a bite of a spider of a cross, the skin turns red and swells quickly

Hermit Spider Bite

Despite the fact that this species of arthropods is not very large, its bite is deadly even for a strong healthy man.The hermit spider pierces the skin in such a way that the person does not experience the slightest discomfort. The poison enters the systemic circulation and gradually spreads throughout the body. What a spider bite looks like:

the bite site is swollen;
the size of the swelling increases rapidly;
large ulcers are formed.

If this area of the skin is not treated with antiseptic agents, then after a while the soft tissues begin to ulcerate and die off.The clinical picture of intoxication is similar to the signs of a respiratory infection:

aches in bones and joints;
temperature rise;
decrease in the functional activity of the cardiovascular system.

The victim’s urinary organs are disrupted and their metabolism slows down significantly. The heart rate decreases, breathing difficulties arise. If at this stage of intoxication a person was not provided with medical assistance, then he may die.

First aid at home

During first aid, as well as in case of bites of non-dangerous spiders, the consequences of intoxication can be alleviated at home. For this, the following action algorithm is provided:

If a child or an elderly person has been bitten, or the victim’s condition is rapidly deteriorating, an urgent need to consult a surgeon. Immediate medical attention should also be sought if there is a suspicion that the attacker is a hermit spider or karakurt.Treatment in this case will be provided by the introduction of antivenom.

Addressing signs and symptoms

Within the framework of the hospital, immediately after the attack of dangerous spiders, a specific serum is injected for medicinal purposes in order to prevent severe intoxication of the body.

Serum will help prevent the dangerous effects of a bite

In case of soft tissue necrosis, surgical intervention is indicated for the purpose of excising the damaged area.

Folk remedies and homeopathy

Spider bites can be treated with folk remedies without severe complications.For example:

In homeopathy there is a remedy – Latrodectus maktans, which can be taken as an adjunct to general detoxification therapy.

Qualified help will be provided in the hospital

Treatment begins with antidotes – serums. Patients with allergies or hypersensitivity are given an antihistamine. Further actions of the physician are aimed at eliminating the symptoms:

The bitten ones are supplied with medicines to normalize the excretory system, to lower body temperature.Positive changes in the state of health of the victim are noticeable after 4-6 days.

Dangerous karakurt bite, prevention and treatment of which will take at least 3 weeks, can give complications:

To exclude the appearance of irreversible changes will allow prophylactic supervision of the patient within 2 weeks after discharge.

Consequences of a yellow saka bite. What to do?

Heiracantium with sharp jaws damages the skin, and does not just sting the upper layer of the epithelium, such as argiopa.Therefore, the bite of the sack spider causes a violent defense reaction of the body, can lead to unpredictable consequences.

Accompanied by burning pain, which then dulls.
The area of the bite quickly swells, reddens.
The bite site itches, blisters appear on the wounds left by chelicera. Local soft tissue necrosis may occur, in which the wound does not heal for weeks.
Concomitant symptoms – chills, headache, nausea (shown in detail in the diagram).The strength of manifestation depends on the individual characteristics of the organism. Allergy sufferers are more vulnerable to bites.
The arthropod can be a carrier of infections.

If a yellow sack or other poisonous spider has bitten what to do first?

Treat the wound with a solution of potassium permanganate, alcohol tincture of calendula.
Apply a cold compress to the bite site. For efficiency, add soda at the rate of 1 tsp. in a glass of water.
It is advisable to immediately take an antiallergic drug (suprastin, tavegil).

How can I avoid being attacked by a yellow saka?

Despite the fact that the yellow sack is quite aggressive and easy to provoke, there are not many confirmed cases of this species of attack on humans. The females protecting the offspring are in a dense and completely closed cocoon, for this reason they can only pose a threat if their shelter is damaged. Most often, people are attacked by male yellow saka. They make their way into human habitation in search of females.

To avoid being bitten by this dangerous spider, you must adhere to the following rules:

When walking in nature, you should always wear clothes that cover your arms and legs;
you can not make sudden movements if the heiracantium is nearby;
do not try to kill a spider on the body;
It is unacceptable to touch or take the yellow saka in your hands.

A glass jar should be used when capturing a spider. In this case, it is important to take into account that the yellow-dead stabbing spider jumps well, therefore, the container must be closed with a lid, having made a hole for air in it.

Sources of

https://wildfauna.ru/zhyoltyj-pauk
https://domvred.ru/zheltyj-pauk-sak-xejrakantium/
https://stopklopu.com/opisanie-i-foto-pauka-sak-hejrakantium/
https://vospari23.ru/simptomy-ukusa-pauka-sak/
https: // apest.ru / pauki / vidy-paukov / pauk-sak /
https://stopvreditel.ru/yadovitye/pauki/xeirakantium.html
https://AgroCompany-kazan.com/drugoe/pauk-sak-foto.html
https://nzs-rst.ru/muhi/pauk-hejrakantium.html
http://www.dangerous-animals.ru/yadovitye/pauki-i-skorpiony/yadovityj-zheltyj-pauk-sak-predstavitel-xishhnyx-paukov.html
https://stopklopu.com/pauk-sak-hejrakantium-foto-posledstvia-ukusa-cto-delat-esli-ukusil/
https: // felisov.