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Phoneutria nigriventer, the Brazilian wandering spider (a ctenid spider) is a large brown spider similar to North American wolf spiders in appearance, although somewhat larger. It has a highly toxic venom and is regarded (along with the Australian funnel-web spiders ) as among the most dangerous spiders in the world. [ 6 ]
All widow spiders (Latrodectus spp.), including the black widows, button spiders, Australian redback spider (L. hasseltii), and the endangered katipō of New Zealand (L. katipo) False black widows (Steatoda spp.) All recluse spiders (Loxosceles spp.), including the brown recluse (L. reclusa) and Chilean recluse (L. laeta) [5] Macrothele spp.
Atypoides riversi, known as turret spider, [2] is a species of mygalomorph spider in the family Antrodiaetidae. [1] It is a medium-sized spider native to Northern California [ 3 ] [ 4 ] that constructs a burrow with a turret made of soil, vegetation and silk. [ 5 ]
Latrodectus hesperus, the western black widow. “The northern black widow, Latrodectus variolus, lives in the northeastern U.S. and southeastern Canada,” Crawford says.These females lack the ...
Similar to those of other recluse spiders, their bites sometimes require medical attention. The brown recluse is one of three spiders in North America with dangerous venom, the others being the black widow and the Chilean recluse. Brown recluse spiders are usually between 6 and 20 millimetres (0.24 and 0.79 in), but may grow larger.
The recluse spiders (Loxosceles (/ l ɒ k ˈ s ɒ s ɪ l iː z /), also known as brown spiders, fiddle-backs, violin spiders, and reapers, is a genus of spiders that was first described by R. T. Lowe in 1832. [4] They are venomous spiders known for their bite, which sometimes produces a characteristic set of symptoms known as loxoscelism.
Joro spiders are large, venomous spiders with four-inch long legs, says David Coyle, Ph.D., invasive species expert at the University of Clemson.
A spider bite, also known as arachnidism, is an injury resulting from the bite of a spider. The effects of most bites are not serious. [1] Most bites result in mild symptoms around the area of the bite. [1] Rarely they may produce a necrotic skin wound or severe pain. [2]: 455 Most spiders do not cause bites that are of importance. [1]