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Walckenaer, 1837 [1] Latrodectus variolus, the northern black widow spider or northern widow, is a venomous species of spider in the genus Latrodectus of the family Theridiidae. The population is closely related to the southern black widow, Latrodectus mactans, and the western black widow, Latrodectus hesperus, of the genus. [citation needed]
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 ...
Latrodectus mactans. ( Fabricius, 1775) [1] 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 ...
The image depicts a male southern black widow spider. The female northern black widow is similar in color and size to its northern counterpart, but instead of an hourglass, the red on its body ...
While many black widow species are recognized throughout the U.S. and the world at large, the southern black widow is primarily found in Pennsylvania. Its relative, the northern black widow, can ...
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.
The image depicts a male southern black widow spider. The female northern black widow is similar in color and size to its northern counterpart, but instead of an hourglass, the red on its body ...
The side effects of a black widow bite can include muscle cramps, headaches, profuse sweating and vomiting, according to Kansas State University Research and Extension. In rare cases, a bite can ...
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