Search results
Results From The WOW.Com Content Network
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.
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.
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.
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 rap ...
This species is most famous for its predation of black widow spiders. [2] Adults feed on the nectar of flowers, which powers their flight. They pollinate some common wildflowers, including Berberis vulgaris, Daucus carota, and Zizia aurea. Larvae are fed spiders, often Latrodectus mactans. They prefer to hunt prey on the ground or under rocks. [4]
Of all the spiders, black widows pose the greatest health threat to Americans, according to Rick Vetter, PhD, a spider expert in the department of entomology at the University of California ...
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).
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.