The most dangerous spider. Types of poisonous spiders. Brazilian wandering spider. Redback spider. Black Widow. Brazilian wandering spiders Banana wandering spider

24.10.2019

The Brazilian wandering spider is the largest spider in the world. At only 13 cm across, that's very small, but don't be fooled by that. According to some researchers, this is the deadliest spider on the planet, it is also very aggressive and territorial. Sometimes it is also called banana spider because many such spiders have been found in bunches of fruit. This is a beast that definitely needs to be avoided.Brazilian wandering spider - actually common name eight species of spiders that belong to the genus Phoneutria - translated from Greek means killer. It runs all over the place at night, actively looking for prey. It does not wait in ambush and does not spin webs like other spiders. The idea that in moist forests there may be giant webs accumulated over the years is a delusion.

Many spiders don't bother with the web at all, preferring to always be on the move to catch food. This species can be recognized by the scarlet-red fur that covers their paws. A defensive posture is also a good indicator, with the spider standing on its hind legs, raising its front legs and swaying from side to side. This spider is not afraid of humans and will actively attack anyone if it feels threatened, making it very dangerous to approach.

Two of the eight species of Brazilian wandering spiders are responsible for the majority of bites and are found in densely populated areas of Southeast Brazil and the Amazon. Most bites occur because the spider roams at night and then hides during the day in something accessible, such as leaves, plants, or logs in the forest, or shoes, clothes, and boxes in people's homes. However, recent studies have shown that these spiders do not inject venom in 30% of their bites, and only a large number of they inject poison into the other 30%. This means that the same bites still sometimes occur. Bites may differ in consequences from simple skin punctures, i.e. simple trouble to complete poisoning. The Australian spider, which is a related species, weaves funnel webs squirting venom each time, and therefore can be considered more dangerous, although the venom of any spider can lead to a medical emergency.

In 2007, the Brazilian wandering spider entered the Guinness Book of Records as the most venomous spider and is responsible for the majority of human deaths due to a spider bite. It is believed that this species includes spiders that have the most powerful neurotoxic venom of any other spiders. It only takes 0.006mg (0.00000021oz) of poison to kill a mouse, not much more is needed to kill a human.

This is big brown spider similar in appearance to the North American wolf spider. Its bite is the most painful due to its large fangs and high level serotonin contained in the poison. This is one of the most painful painful bites among all spiders. This poison has also been found to increase nitric oxide levels. The effect on the male victim will be the same as swallowing Viagra - a long and painful erection when it is least needed.

While the poison can certainly be deadly, since the invention of the antidote in 2004, no human deaths have been recorded. And yet, encounters with any large spider, the danger of which is as obvious as the danger of the Brazilian Wandering Spider, should be feared.

Still, people sometimes encounter similar species of spiders when unpacking fruits that have been delivered from overseas, but you are unlikely to ever encounter such spiders unless you roam South America. However, it is worth knowing what kind of danger spiders can pose if an attack does occur. They are officially the most dangerous spiders on Earth. Be careful.

For residents of Ukraine, Russia and neighboring countries, local spiders do not pose a particular danger, since even poisonous individuals cannot kill a person. However, there are more terrifying varieties in the world, the representative of which is the Brazilian wandering spider, which will be discussed later.

Appearance, color and size

The Brazilian wandering spider is a relatively large arthropod, whose body length often exceeds 10 cm. The head and chest are small, but the belly is thick, which is explained by the constant consumption of food. Massive legs are covered with hairs, which largely gives the spider a frightening appearance.

The color of the arthropod varies depending on the specific habitat conditions. Most often it is dark brown with light patches on the legs and back, but can have a brown color with reddish tints or even black.

It is not difficult to recognize a spider by its behavior: at the moment of danger, the arthropod stands on its hind legs, raising its forelimbs up. For this feature, he was nicknamed the "soldier". In the process of such a “ritual”, the spider can sway from side to side, and its jaw acquires a crimson red color.

Did you know? The spider web is so unique that it has not yet been possible to reproduce it in the laboratory. In addition, it is very light, therefore, according to preliminary calculations, for coverage globe it would take only 340 g of such "yarn".

Where does it live

The main habitats of the "Brazilian wanderer" are the territories of Central and South America, where arthropods settle mainly in tropical forests. Sometimes they can be found in private homes, where they climb in search of food or shelter.
Spiders crawl into boxes with shoes, bags of clothes and even things scattered on the floor, which only increases the danger to humans. During the day, they can sit out in cool basements or dark closets, and at night they actively move around the house.

This behavior is also typical in forest conditions: during the day, the spider sits under stones or in cool burrows, and with the onset of night it quickly moves around the territory, for which it is also called a “runner”.

On the territory of the Russian Federation, Ukraine and Belarus, the “Brazilian wanderer” can only be found in terrariums, but in open nature until it was fixed. True, this does not mean that there is nothing to fear: there are many poisonous varieties that are common with us (for example, the "black widow").

What does it eat

The diet of the Brazilian spider is quite wide, and includes:

small insects;
small lizards;
other spiders, and even weaker members of their own species;
sick birds, even if they are larger than him.

Attacking its prey, this small predator plunges its teeth into it and injects poison into the body, which paralyzes the animal in a few seconds. This allows him to calmly proceed to the meal.

In the absence of such food, he does not disdain some fruits, especially bananas. For the love of them, the arthropod was called the "Brazilian banana spider."

Important! In boxes of bananas, they travel very long distances. There are cases when a spider got to another continent, endangering the local population.

reproduction

Brazilian wandering spiders are dioecious creatures. The color of the female is much brighter color male, but the size of the male exceeds the size of the female, in addition, males have an additional pair of limbs (used during mating).

To attract the attention of his chosen one, the male performs peculiar dance while simultaneously offering her the food she caught.

After intercourse, the female often eats her partner, and after a few weeks she lays eggs and guards them until the very appearance of the young. After that, the mother's mission of the female is completed: young individuals crawl along the paths in search of food.

How dangerous is a spider bite

The Brazilian wandering spider has entered the Guinness Book of Records as one of the most venomous creatures in its squad. This attitude of people is explained by his aggressive behavior and powerful neurotoxins that are part of the poison.

In a healthy adult, they cause a strong allergic reaction, but with timely access to a doctor, a lethal outcome can be avoided. Great danger"wanderer" represents for children and people with weakened immune systems, among whom the percentage of deaths is much higher.

During a bite, a person feels a sharp pain, difficulty breathing and swelling separate parts body. Over time, complete paralysis of the respiratory muscles occurs and the victim suffocates. Depending on the state of the body, death occurs within 2-6 hours after the bite.

How poison is used in medicine

The poison of various animals has always been the subject of study by scientists, because this is the only way to develop an antidote and save a large number of people. However, the poison of the "Brazilian wanderer" is interesting not only for this.

Did you know? by the most prominent representative big spiders considered a goliath tarantula. With a body size of up to 10 cm, the span of its limbs reaches 30 cm.

It contains the toxin TX2-6, which helps to increase erections in the male. And although there is no cure for erectile dysfunction with his participation yet, developments in this direction are still underway. It is likely that soon the world will know about a new cure for impotence.

As you can see, a wandering spider - interesting object for a detailed study, but if you have to meet him in wild environment- it is better to bypass the predator side without exposing yourself to danger.

Runner, banana, wanderer... it's not just a bunch of words. This is the name of one of the most dangerous spiders in the world, which can take the life of a person in less than an hour. The Brazilian soldier spider is one of the most common names for the deadly venomous spider that keeps people in Central and South America at bay. Recognized by the Guinness Book of Records as the most dangerous and poisonous of the spider family.

What does death look like and how does it live

Once upon a time, the spider ranked first in the world in terms of danger, but now the Brazilian spider soldier is on the throne. This is a very active and aggressive animal, which, unlike its relatives, does not weave a web, does not live long in the same place, but loves to travel.

Depending on the habitat, its color also varies, but, as a rule, it is the color of sandy soil, which allows it to be perfectly camouflaged. The area next to the chelicerae is colored red, which helps to first attract and then intimidate the enemy. The size of the spider can reach 15 centimeters, along with the span of its large legs.

During the day, it often sits under rocks and logs, waiting for the night to fall when it feels more comfortable. Wandering all day, the soldier spider sometimes wanders into people's dwellings, and can hide in their clothes scattered on the floor, in shoes, climb into boxes or something like that. This spider loves to hide in banana boxes, which is why it is often also called the “banana” spider, sometimes it can even eat bananas themselves.

If the spider has met an enemy, it raises its front legs, puts its body upright, exposing its red "zone" next to the chelicerae.

What does a predator eat

Sometimes, but very rarely, bananas, while living in banana boxes, more often various insects. But this spider has the glory of an aggressive predator also because it can easily pounce on some small or even if they are larger than it.

Spider - soldier and man

Like most animals, even the most dangerous and aggressive, the Brazilian soldier spider will not be the first to rush into battle, it attacks and bites only in case of danger to life.

As noted earlier, due to the inconspicuous appearance and Great love"play hide and seek" in the houses and things of people, meetings with this spider are very frequent and sometimes end, alas, very sadly. According to various sources, the bite of a soldier spider leads to lethal outcome in 85% of cases. Its poison is incredibly toxic, causing paralysis of all muscles, as a result of which a person dies from suffocation. There is an antidote that is no less toxic than the poison itself.

Despite all the negative points, scientists have found that poison brazilian spider soldier can positively influence the sex life of men. The toxin contained in the poison can cure impotence, and in this moment scientists are studying how to combine the toxin with existing drugs in order to effectively and safely treat male ailment.

The Brazilian wandering spider lives in South and Central America. This large hairy spider is considered the most venomous spider in the world. Brazilian wandering spiders sometimes wander into settlements and are found among loads of tropical fruits, so it is useful to know their appearance and habits, especially if you find yourself in their range. When bitten by this spider, urgent health care. However, don't panic! Brazilian wandering spider bites are almost always treatable.

Steps

Appearance and habits of the Brazilian wandering spider

The length of the spider, together with its paws, is approximately 15 centimeters. An adult Brazilian wandering spider has a body about 5 centimeters long. At a glance, it is easier to determine the total length, that is, the distance from the end of the hind legs to the end of the front legs, which reaches about 15 centimeters. Be careful if you come across such a large spider.

The spider is most likely to be brown and hairy. Although the coloration of Brazilian wandering spiders varies, most of them have a dirty brown color, and some have black spot on the stomach. The body of all Brazilian wandering spiders is covered with hair.

Brazilian wandering spiders move quickly. They got their name from the fact that they move quickly on the ground. rainforest. Spiders are capable of attacking their victims with lightning speed, so be careful if you come across a fast moving spider in the range of the Brazilian wandering spider.

If the spider shows its red jaws, back away slowly. When scared, the Brazilian wandering spider rears up on its hind legs. In this intimidating pose, some species of the Brazilian wandering spider show red hairs around their fangs. This defensive stance indicates that the spider is angry, in which case you should back away carefully and slowly.

Don't hesitate trying to get a better look at the spider. If you're traveling through South and Central America, or living in areas where Brazilian wandering spiders are found, don't hesitate if you spot a large spider. In case of any doubt, do not try to be sure that it is a Brazilian wandering spider, but move slowly to the side so as not to anger the animal.

Don't try to catch the spider. If you suspect that your home or utility room a Brazilian wandering spider has wandered in, call the wildlife trap team and leave the building before the arrival of specialists.

Be careful in dark places. Brazilian wandering spider leads night image life and skillfully hides in the forest floor tropical jungle. Such a "wandering" lifestyle sometimes leads to the fact that the spider wanders into settlements, where it tries to hide from sunlight in secluded places, for example:
- in dark closets, closets, and so on;
- under sheds and in garages;
- in cars;
- in unused clothes, shoes, gloves;
- in kitchen cabinets;
- in boxes and crates in the attic or garage;
- in wood.
Be careful when opening fruit packages. This spider is also called a banana spider, as it likes to climb into bananas and can end up in a package with these fruits. Although this happens quite rarely, be careful when unpacking fruit shipped from regions where the Brazilian wandering spider lives.

Biting Prevention

Wear protective gloves when working in dark areas or carrying firewood. If you live in the Brazilian wandering spider's range, wear long sleeves, a hat and gloves, and tuck your pants into your socks when working in the garage or near woods. It is advisable to use protective clothing also when working in the attic, utility rooms and basements.

If you have not worn gloves, clothes and shoes for a long time, shake them before use. The Brazilian wandering spider can hide in the folds of clothing and also climb into cozy places like gloves or boots. Shake clothes and shoes lightly before putting them on. However, don't push them too hard, or the hiding spider might get angry or scared.

Don't panic if a spider falls out of your clothes or shoes. Move slowly to the side and leave the room.

Before entering dark rooms, such as closets, check them. Turn on the light. If there is no light in the room, take a flashlight with you and inspect the corners and cluttered places.

Install mosquito nets and doors that close tightly to keep spiders out of your home. The best way not to be bitten in your own house is to keep the spiders out! Check all mosquito nets and doors for cracks and holes through which spiders could get into your home. Replace any broken or loose screens and doors.
- To not get into the house uninvited guests, you can also spray insect and spider repellant around doors and windows.
Do not keep firewood near the house itself. Spiders love to hide among firewood, so don't keep them close to your house. Keep firewood and dry branches in the yard and handle them carefully.

In this topic, I would like to talk about a spider that has nothing to do with tarantulas, but it is very interesting. Phoneutria fera is one of the most poisonous spiders on the planet, so I decided to post about it on my blog.

Wandering Soldier Spiders are one of the most venomous spiders on Earth.

It is correct to call: "Brazilian soldier spiders", or "Brazilian wandering spiders". In books and publications, we often see the “banana spider”, a name denoting many of the most diverse spiders of the genus Nephila (N. clavipes) and Phoneutria, which owns Brazilian soldier spiders. It is the representatives of the genus Phoneutria that are the most poisonous spiders. Their favorite habitat is the banana plantations of Latin America, so they have another name given to them by the people: "banana spider".
Genus spiders Phoneutria Perty is common in the Americas. Habitats of species of this genus:

Phoneutria bahiensis - east of Brazil, forests on the coast;

Phoneutria boliviensis - Southern and Central America;

Phoneutria eickstedtae - Brazil;

Phoneutria fera - Suriname, Peru, Ecuador, Guyana, Brazil;

Phoneutria keyserlingi - forests of the east coast of Brazil;

Phoneutria nigriventer - northern Argentina, eastern Brazil, Uruguay;

Phoneutria pertyi - East Coast Brazil;

· Phoneutria reidyi - Peru, Brazil, Venezuela, Guyana.

"Wandering" spiders were also called because of their dietary preferences, which were reflected in their lifestyle. Soldier spiders do not weave webs. These fast creatures are very active. They constantly move, do not stay in one place for a long time. Do not use or weave a web. They spend their days searching for food. The most poisonous spider, oddly enough, loves to feast on bananas. Therefore, there are many of them on the banana plantations of the tropical part of America.
In search of food, a banana spider often enters residential buildings, turning into a formidable source. mortal danger. The poisonous spider whose photo you see meets a person not only in wild nature. Quite often, they enter people's homes directly with a bunch of bananas from the store. In the house, he can meet anywhere. They find temporary shelter in the folds of clothing, fruit boxes, inside furniture.
Although bananas are a delicacy for the most poisonous spiders, soldier spiders are still predators. Their main diet is insects and other types of spiders. The size of the spider is small, with elongated legs they reach about ten centimeters. But despite its modest size, the most poisonous spider is an excellent hunter. It attacks small reptiles: lizards, snakes, frogs. It can even attack small birds that are much larger than it.
Therefore, we can say that soldier spiders are aggressive and very dangerous creatures for humans. Death from a spider bite occurs after 2-6 hours. Although the banana spider is one of the most venomous spiders on Earth, fatalities from their bites are fortunately not the rule.
The fact is that the toxicity of its poison is inferior to poison, for example, poisonous snakes. And its effect is highly dependent on the body weight of the victim. The larger the mass, the weaker the action. The dose of poison in the human body of the spiders of the species Phoneutria fera can be quite decent. But this does not always lead to death.
The poison is produced by special glands located at the tips of the chelicerae. Getting under the skin, it causes a strong allergic reaction. If a person is healthy and adult, then usually the bite of the most poisonous spider does not lead to death. But when a child is bitten, or a sick person with a weakened immune system, death can occur quickly if medical assistance is not provided.
The most powerful neurotoxins contained in the poison, extremely aggressive, fearless behavior provided the banana spider with a reputation not only as the “most poisonous spider”, but also “the most dangerous” to humans.
The bite of a spider is very painful. The poison causes symptoms of severe intoxication, then, after a certain period of time, the respiratory muscles are paralyzed. A few hours after the bite, the person dies.
But, if medical assistance is immediately provided, then fatality can be avoided. This is how the lucky ones who received such help on time describe the bite of the most poisonous spider. Doctors injected them with an antidote that saved their lives. The bite is compared to the prick of a sharp thorn that has penetrated very deep. Dizziness sets in. There is a strong pressure in the chest, which makes it difficult to breathe normally. Rapid increase in blood pressure circulatory system. There is a strong beating of the heart.
But in the countries of Latin America, tragedies still happen now. A case that occurred in Brazil: children played, climbed into the attic of their house, where they saw a spider. But they were not afraid, but decided to play with him. Spider soldier bit the girl. Her brother rushed to her aid. He wanted to throw it aside, but he was also bitten by the most poisonous spider. Parents of children immediately called ambulance which arrived in half an hour. But for the girl, this time turned out to be fatal. Only thirty minutes, but she could not be saved.
The behavior of the most poisonous spider is aggressive, but at the same time it does not attack large animals and humans. Bites occur more often due to the fact that a person simply does not notice a spider that is hiding in a shelter. Or out of ignorance that the spider is poisonous, they are caught, picked up.
It is well known that snake venoms are used in medicine. Of them are made effective medicines. The banana spider has venom that has and interesting properties. According to the testimony of men who suffered from the bite of the most poisonous spider, during the action of the poison they felt a strong, painful erection (priapism). And after recovery, they claimed that the quality of their sex life had improved a lot.
This gave rise to scientists to start researching the poison of soldier spiders. Research is underway, it is assumed that the Tx2-6 spider toxin, which causes such a reaction in the body, can be used to create medical preparations to stimulate an erection.