Even if you know nothing about this spider, a few key details probably come to mind: a visible red hourglass mark and a ...

Black widows are notorious spiders identified by the colored, hourglass-shaped mark on their ... The animals most at risk from the black widow's bite are insects—and male black widow spiders.

While Hollywood and urban legends paint dramatic tales about spider bites, medical professionals share a fascinating reality: ...

Venom 15 times stronger than a rattlesnake — the black widow spider. What happens when it bites? All black with a red hourglass, just bigger than a paperclip. Only the female can bite humans.

Their coloring is mottled, and females have black accent stripes. There is an hourglass shape on the abdomen, usually in a shade of orange. Female brown widow spiders are relatively small at ...

Red widow spiders have entirely red-brown bodies, with the exception of their black abdomen. ©Florida Division of Plant Industry Archive / CC BY 3.0 US, via Wikimedia Commons – Original ...

The brown widow spider (Latrodectus geometricus) is a lesser-known relative of the infamous black widow. The first brown widow spider was discovered in Los Angeles in early 2000. A member of the ...