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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).
Button spider is a common name used in Southern Africa to refer to local members of the spider genus, Latrodectus, the family Theridiidae. There are both black and brown button spiders in Southern Africa, that are known elsewhere as widow spiders.
Latrodectus rhodesiensis is a species of spider in the family Theridiidae, found in southern Africa. [1] It is one of six species of Latrodectus found in southern Africa, two of which, including L. rhodesiensis, are known as brown button or brown widow spiders.
Brown recluse. What they look like: The brown recluse is a brown spider with a distinct “violin-shaped marking” on the top of its head and down its back, Potzler says. Also, brown recluse ...
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.
Brown recluse spiders are not aggressive and bite rarely, Skvarla says. When bites do occur, they rarely result in more notable symptoms than a small red mark and localized pain similar to other ...
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.
There may be brown recluse spiders in your home, and you may see them more this summer, experts say. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 ...