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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.
Chamberlin & Ivie, 1935 [1] 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 ...
Chacoca distincta Badcock, 1932. 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).
Black widow. What they look like: The infamous black widow has a shiny black color along with their signature, red hourglass-shaped marking on their underside, explains Potzler. “They may also ...
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 ...
False black widows (Steatoda species) may look like their dangerous doppelgangers, but they lack the red hourglass-like markings found on black widow abdomens. These spiders offer bites that can ...
“Female black widow spiders are known to be aggressive and bite in defense, especially when guarding eggs. In rare cases, black widow spider bites can be fatal.” Brown recluse spiders
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.