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Latrodectus mactans. 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 ...
The blue mud dauber species, Chalybion californicum, is a wasp that, in western North America, is the primary predator of black widow spiders. [ 21 ] The ultimate tensile strength and other physical properties of Latrodectus hesperus (western black widow) silk are similar to the properties of silk from orb-weaving spiders that had been tested ...
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.
In the spider world, even predators are hunted.Biologists in regions of the Southern U.S. noticed that the iconic black widow spider — known for its telltale hourglass mark and venomous bite ...
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.
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, with colonies elsewhere outside Australia. [ 5] It is a member of the cosmopolitan genus Latrodectus, the widow spiders.
Latrodectus geometricus. 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).
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 ...