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The redback spider (Latrodectus hasselti), also known as the Australian black widow, [2] [3] [4] is a species of highly venomous spider believed to originate in Australia but now, Southeast Asia and New Zealand, it has also been found in packing crates in the United States with colonies elsewhere outside Australia. [5]
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 ...
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 ...
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 ...
How to Identify a Black Widow Spider There's probably a specific image that comes to mind when you picture a black widow spider: A large, shiny, black spider with a red hourglass on its belly.
It is one of many species in the genus Latrodectus, such as the Australian redback (L. hasseltii), and the North American black widow. The species is venomous to humans, capable of delivering a potentially dangerous bite. It is a small to medium-sized spider, with the female having a round black or brown pea-sized body.
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.