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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.
Latrodectus mactans, known as southern black widow or simply black widow, and the shoe-button spider, [citation needed] is a venomous species of spider in the genus Latrodectus. The females are well known for their distinctive black and red coloring and for the fact that they will occasionally eat their mates after reproduction.
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.
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 ...
There are more than 3,500 different kinds of spiders in the U.S., but only two pose a real threat to Mississippi, Alabama and Georgia residents.
Two venomous spiders, black widows and brown recluse spiders, can cause severe symptoms, experts say. ... These spiders, the name suggests, can be reclusive, Gangloff-Kaufmann says. They tend to ...
Latrodectus hesperus, the western black widow spider or western widow, is a venomous spider species found in western regions of North America. The female's body is 14–16 mm (1/2 in) in length and is black, often with an hourglass-shaped red mark on the lower abdomen. This "hourglass" mark can be yellow, and on rare occasions, white.
The only spiders that are currently classified as “venomous spiders” by the Mayo Clinic include the black widow spider and the brown recluse spider; however, S. ocreata spiders are not definitively harmless. Hence, it is important to seek medical attention if you are unsure of the kind of spider bite you have, feel respiratory distress, or ...