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Spiders of the United States — a type of air-breathing arthropods of the U.S., that have eight legs and fangs that inject venom. Only spiders of the continental US should be included; Hawaii and other Pacific islands belonging politically to the United States are placed in Category:Spiders of Oceania .
(Hawaii and other Pacific islands belonging politically to the United States are placed in Category:Spiders of Oceania.) Spiders native to North America may also be found in categories covering larger areas: Category:Cosmopolitan spiders – spiders native worldwide; Category:Holarctic spiders – spiders native to the Holarctic; includes North ...
A number of spiders can cause spider bites that are medically important. Almost all spiders produce venom but only a few are able to cause significant harm to humans. [1] Two medically important spider genera have a worldwide distribution—Latrodectus and Loxosceles. Others have a limited distribution.
“The majority of the spiders cause us no harm and are predators of pests,” says entomologist Roberto M. Pereira, Ph.D., an insect research scientist with the University of Florida. Translation ...
Wolf spiders, jumping spiders, fishing spiders and some crab spiders capture prey by chasing it, and rely mainly on vision to locate prey. [ 13 ] Some jumping spiders of the genus Portia hunt other spiders in ways that seem intelligent, [ 22 ] outflanking their victims or luring them from their webs.
One genera, the Sphodrus spiders, are found in the eastern half of the United States. Others live in Europe, Japan, Myanmar (Burma), Java, and tropical parts of Africa.
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While roughly 3,000 species of spiders are found throughout the U.S., very few pose a direct threat to humans. Spider bites are rare, and medically significant incidents are even less common ...