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These spiders are solid and strong-looking with reddish-brown to black bodies. The males have distinctive long red or red-orange legs from the femora downwards. The females have legs the same color as the body. Females are known to reach a body length of about 25 mm, or just under an inch, including the chelicerae. Males are smaller with a body ...
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.
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 yellow, and on rare occasions, white.
Latrodectus hesperus, the western black widow. “The northern black widow, Latrodectus variolus, lives in the northeastern U.S. and southeastern Canada,” Crawford says.These females lack the ...
“The hobo spider can inflict a painful bite that results in localized red swelling and some pain, but no necrotic lesion,” Potzler says. Usually, symptoms will get better within 24 hours with ...
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]
Like all spiders in the genus Latrodectus, females are larger than males. Females range from 7 to 16 mm, and the males 2.5 to 5 mm. In maturity, most retain at least short red stripes radiating upward from the tip of the dorsal abdomen. Like many black widows, it is not aggressive.
The brown button spiders are lighter in color than the black button spiders and have a red hourglass marking under the abdomen (not above) with exception of the L. umbukwane which has both red markings above and below the opisthosoma (abdomen); there are three brown button species: L. geometricus (brown button spider)