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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).
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.
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.
In rare cases, black widow spider bites can be fatal.” Brown recluse spiders. Brown recluse spiders like to go where there’s clutter, so we’re talking closets, attics and crawlspaces, all of ...
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 ...
Intense pain, muscle stiffness, possible nausea, and vomiting are the telltale signs of a black widow spider bite, and these symptoms will likely occur within a few hours after being bitten ...
Brown recluse and black widow spiders are venomous spiders. Black widow and brown recluse spiders are "the two types of venomous spiders that are really of medical concern," Gangloff-Kaufmann ...
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.