Red widow spiders have entirely red-brown bodies, with the exception of their black abdomen. ©Florida Division of Plant ...

(Photo credit: iStock/Getty Images) The southern black widow. This spider has a shiny, black, globe-shaped belly (abdomen). You’ll know it by the red hourglass mark on the underside. The ...

Female black widow spiders are well known for their red hourglass, found underneath their abdomens, while brown recluses do ...

Males usually have a brown or gray body with red, yellow, or white spots or bands on their abdomens. This variation in coloring means that black widow spiders can be tricky to spot if they aren ...

If the dark color or red marking wasn’t enough to identify the black widow, its web is another giveaway. Compared to symmetrical webs of orb-weaving spiders, the black widow spins an irregular ...

Coticchio tested close brown widow interactions with three related spider species: the Southern black widow, the red house spider (Nesticodes rufipes), and the triangulate cobweb spider (Steatoda ...

They’re helping you, not hurting you.” Editor’s note: This article was updated at 5:35 p.m. Friday, Nov. 17, 2023, to correct that the red hourglass shape is on black widow spider’s abdomens.

Gabe Ginsberg via Getty Images With iconic red hourglass ... a brown widow into a tank with either a southern black widow, a red house spider or a triangulate cobweb spider and recorded the ...

JasonOndreicka Getty Images/iStockphoto Even if ... Scientific name latrodectus mactans, black widow spiders can usually be identified by the red hourglass marking on their back.

It can be pretty tough to be a bug, especially for spiders ... southern black widows versus any other related species. While living with the red house spider, sub-adult brown widow females simply ...

JasonOndreicka Getty Images/iStockphoto While roughly ... are much smaller than females with white underbody markings and red spots. Black widow spiders are usually found in dark and undisturbed ...