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Latrodectus is a broadly distributed genus of spiders with several species that are commonly known as the true widows. This group is composed of those often loosely called black widow spiders , brown widow spiders , and similar spiders.
The Black Widow spider (Latrodectus spp.) is a spider notorious for its neurotoxic venom (a toxin that acts specifically on nerve cells). The Black Widow Spider is a large widow spider found throughout the world and commonly associated with urban habitats or agricultural areas.
Latrodectus mactans is the most common species of black widow in North America. The female is shiny black and usually has a reddish to yellow hourglass design on the underside of the spherical abdomen.
Latrodectus. Type: Invertebrates. Diet: Carnivore. Average Life Span In The Wild: 1 to 3 years. Size: 1.5 inches long; diameter of 0.25 inches. Weight: 0.035 ounces. Size relative to a paper...
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.
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.
Latrodectus spiders are the largest of the Theridiidae (cobweb weaver) spiders. The size of a Latrodectus can vary across species. Please refer to specific species for more information.
The black widow spider (Latrodectus mactans) is probably the most feared spider in North America. Its venomous bite is excruciating, and the spider gets its name because females sometimes eat their mates. Yet, this spider doesn't deserve its bad reputation. Here are the facts you need to know.
The Southern black widow spider, Latrodectus mactans (Fabricius), is a venomous spider found throughout the southeastern United States. Widow spiders received their name from the belief that they would kill and consume their mate following copulation.
Genus Latrodectus (Widow Spiders) Species variolus (Northern Black Widow) Pronunciation. lat"ro-dek't [schwa]s var·E·O·lus. Synonyms and other taxonomic changes. See the World Spider Catalog. Size. Adult Female: approximately 9-11 mm (just under 1/2 inch) in body length (not including legs)