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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 hasselti, the redback spider. The widow spiders (genus Latrodectus), such as the black widow, redback spider, and katipÅ are spiders that carry a neurotoxic venom [18] which can cause a set of symptoms known as Latrodectism. Widow spiders are large, shiny house spiders with relatively spindly legs and deep, globular abdomens.
The eye arrangement of spiders in the genus Latrodectus. Female widow spiders are typically dark brown or a shiny black in colour when they are full grown, usually exhibiting a red or orange hourglass on the ventral surface (underside) of the abdomen; some may have a pair of red spots or have no marking at all.
Primarily, arachnid-fearing Pennsylvanians need to worry about only one spider species in the rare event of a bite: the black widow. Brown recluse spiders, which also offer a medically significant ...
Black widow and brown recluse spider bites can cause more severe symptoms and, in rare cases, death, the Centers for Disease Control and Prevention say. If you're bitten by one of these spiders ...
These pictures of common venomous bites, including brown recluse and black widow spider ... “There are a limited number of spiders in the world with fangs strong enough to pierce human skin, and ...
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 ...
Brown widow spiders are gray to brown in color with white and black markings on the top surface of their bulbous abdomens. The “hourglass” marking on the under surface of the abdomen is yellow ...