Each season, female brown widow spiders lay several egg sacs, each with 120 to 150 eggs. The egg sacs are distinctive, with silky spikes projecting from the surface, much like a thistle.

Brown Widow (Latrodectus geometricus ... If you crush her, it might release hundreds of tiny, baby wolf spiders in your house. What are the deadliest spiders in the world? Here are the nine ...

Western black widow spiderlings, for example, are brown with a white, black-spotted abdomen. As baby black widows mature, their appearance gradually changes, and the females eventually develop the ...

Brown widow spiders, which are invasive to North America, are wiping out black widow populations in the U.S. by aggressively attacking them for no clear reason, a new study shows. When you ...

To best see what's transpiring between these two widow species, Coticchio tested close brown widow interactions with three related spider species: the Southern black widow, the red house spider ...

The brown widow spider, Latrodectus geometricus, is an urban invasive species that generally lives under garbage cans, in fences, and around buildings. This study compared behaviors of the ...

But they seem to be no match for their aggressive non-native cousin, the brown widow. Scientists at the University of South Florida have recently discovered that brown widows ruthlessly target and ...

Brown widow spiders (Latrodectus geometricus) don’t seem to get along with their cousins from the same genus, and over the past few decades scientists have observed brown widow spiders ...

In the past couple decades, researchers have noticed black widow spiders being displaced by the brown widow, a fellow species in the same genus. But new research suggests this isn't a simple case ...

Brown widow venom has bite ... If you crush her, it might release hundreds of tiny, baby wolf spiders in your house. Ticks are related to spiders and scorpions but are actually a kind of mite.