8 Deadliest Spiders On Earth

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Brown Recluse Spider

The brown recluse spider is one of the most dangerous in the US. A big cutaneous ulcer can result from its venom's destruction of blood vessel walls near the bite.

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Brazilian Wandering Spiders 

Raising their front legs straight up is their aggressive defense posture. Phoneutria, the deadliest spiders, are toxic to humans.

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Yellow sac spider

Yellow sac spiders, Clubionids (order Araneida), create silken tubes under stones, leaves, and grass and grow to 3 15 mm (0.12 0.6 inch).

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Wolf spider 

Wolf spiders are part of the global Lycosidae family. They are named for their wolflike prey-chasing and pouncing. 

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Black Widow Spider

The black widow causes over 2,500 U.S. poison control center visits annually. The species is widespread in the US, Canada, Latin America, and the West Indies. 

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Brown Widow Spider

The first brown widow was found in South America, but it may have evolved in Africa. It is an invasive species elsewhere.

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Red Widow Spider

The widow spider's crimson cephalothorax, legs, and reddish-brown to black abdomen differentiate it from others. 

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Redback Spider

Spider nests and webs are often found on grape leaves and bunches. The species lives in all of Australia excluding its harshest deserts and coldest mountaintops.