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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.
Elsewhere, others include the European black widow (Latrodectus tredecimguttatus), the Australian redback spider (Latrodectus hasseltii) and the closely related New Zealand katipō (Latrodectus katipo), several different species in Southern Africa that can be called button spiders, and the South American black-widow spiders (Latrodectus ...
Despite the estimated 2,200 Black Widow bites annually in the nation, only one known death has occurred since 1983. | Letters to the Editor ... Black Widow spiders are rarely deadly and have a bad ...
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. This "hourglass" mark can be red, yellow, and on rare occasions, white.
Latrodectus hasselti, the redback spider. The widow spiders (genus Latrodectus), such as the black widow, redback spider, and katipō 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.
A black widow spider travels along her web. Black widows sometimes have various marks on their back beside the red hourglass, including yellowish-orange shapes, two marks or a single dot, and ...
The venom of a black widow spider, however, is a neurotoxin, the CDC says. Therefore, black widow venom causes widespread pain across an area of the body and symptoms that aren't limited to the ...
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.