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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. As such, it is a 'cousin' to the more infamous Latrodectus mactans (black widow).
Latrodectus is a broadly distributed genus of spiders ... North America also has the red widow Latrodectus bishopi and the brown widow Latrodectus geometricus ...
U24-ctenitoxin-Pn1a is naturally found in the venom of Latrodectus geometricus, often referred to as the brown widow spider or brown button spider.The spider genus Latrodectus is found worldwide in pantropical and subtropical regions and is considered one of the most dangerous spider genera to humans and animals.
L. geometricus (brown button spider) L. rhodesienses (Zimbabwe button spider) L. umbukwane (Phinda button spider) L. geometricus is found in many parts of the world,(including in the United States) and it is known as the brown widow spider. it is unknown where this species' origins are. L. rhodesienses is native to Africa. Both brown button ...
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.
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Latrodectus rhodesiensis Mackay, 1972 — Southern Africa Latrodectus thoracicus Nicolet, 1849 — Chile Latrodectus tredecimguttatus (Rossi, 1790) ( type ) — Mediterranea, Ukraine, Caucasus, Russia (Europe to south Siberia), Kazakhstan, Central Asia, China
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.