Spiders are not at all as scary as they might seem at first glance. They destroy insect pests, protecting gardens and vegetable gardens. The unique properties of the web have been used in many industries and even in the military. However, there are truly terrible creatures among spiders, a meeting with which can be fatal to humans.
Brazilian wandering spider
The Brazilian Soldier Spider, or Brazilian Wandering Spider, is a member of the Phoneutria, or running spider genus, and is considered by scientists to be the most venomous spider on Earth. Its bite is capable of taking the life of an adult in a few minutes. They live in thickets of bananas, which is why they are also called "banana spiders". They are quite large - the body diameter is about 5 centimeters, and the distance between the legs is 12-15 centimeters. They are brown in color with black spots on the abdomen. They are active mainly at night, their favorite food is insects, although wandering spiders do not disdain other spiders, small lizards and mice. Sensing a threat, the spider lifts its legs high, trying to intimidate the enemy. These spiders are considered very aggressive, however, according to scientists, they show aggression only if they believe that they are being threatened or attacked.
Black Widow
The scientific name for this famous spider is Latrodectus mactans. Lives mainly in the southern United States, but occasionally occurs in most countries of the Western Hemisphere. In this species, females are much larger and heavier than males. Being 2-3 times larger than the partner, the female black widow easily kills him after mating. The venom of a black widow is 15 times stronger than that of a rattlesnake. The latrotoxin it contains is a powerful neurotoxin that rapidly causes vomiting, shortness of breath, delirium, loss of consciousness and paralysis.
Brown recluse spider
Brown recluse spiders are most common in the eastern United States, although they can be found in many parts of the Western Hemisphere. These are lone spiders, but they prefer to settle not in dense forests and swamps, but in dark corners of closets, basements and dressing rooms in human dwellings. The spider considers an attempt by a person to approach his dwelling as an attack - and reacts accordingly. Symptoms of a bite include irritation and itching, fever, fever, nausea, ulcers at the site of the bite.
Sydney funnel spider
The habitat of the Sydney funnel spider lives up to the name: these creatures live in the vicinity of Sydney and within a radius of 100 kilometers from it. The funnel spider neurotoxin is different in its action from the toxins of most spiders, designed to cause paralysis of the nervous system of the victim. Funnel spider atracotoxin works differently. It dramatically raises blood pressure and causes millions of air bubbles in the lungs to explode. The person begins to suffocate, as if under water. Ironically, atracotoxin is harmless to most mammals, but deadly to primates: an adult dies just 15 minutes after being bitten.
Red back spider
Red-backed spiders live in abundance in Australia, there are also a lot of them in New Zealand, Japan and in Southeast Asia in general. They got their name for a red spot on the back, because of which the red-back spider is often confused with the black widow. They live in the vicinity of human habitation, climbing into such unexpected places as letter boxes, sheds, latrines. The venom contains a neurotoxin that causes vomiting, profuse sweating, headache, chest tightness and general unwell for at least 24 hours. In more severe cases, loss of consciousness, respiratory arrest and death occurs.
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