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 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 geometricus, commonly known as the brown widow, [2] [3] brown button spider, grey widow, brown black widow, [3] house button spider or geometric button spider, is one of the widow spiders in the genus Latrodectus.

Aug 16, 2021 · 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.

Meet the Latrodectus spiders, often known as true widows! They’re part of the cobweb spider family. By July 2017, there were 31 types of them, living everywhere except Antarctica.

Dec 13, 2022 · Undisturbed woods, in stumps, or in stone walls. Caution: This spider is venomous and can harm people. However, the female injects such a small dose of venom that it rarely causes death. Reports indicate human mortality at well less than 1% from black widow spider bites. (Net Ref (1))

Latrodectus, commonly known as Widow Spiders, is a genus of spiders in the family Theridiidae. Latrodectus spiders have been sighted 242 times by contributing members. Based on collected data, the geographic range for Latrodectus includes …

Apr 23, 2019 · Northern Black Widow (Latrodectus variolus) The Northern Black Widow is a cool spider found mainly on the ‘East Coast’ of North America. It’s a close relative to the southern and western black widows .

Latrodectism (/ l æ t r ə ˈ d ɛ k t ɪ z əm /) is the illness caused by the bite of Latrodectus spiders (the black widow spider and related species). Pain, muscle rigidity, vomiting, and sweating are the symptoms of latrodectism.