Brown widow spiders are venomous, but their bites are considered much less dangerous than other venomous spiders.

Brown widows acted more aggressively than southern black widows towards the other spider species offered and didn’t spare the young. “[Brown widows] were wiping them out before they even got a ...

Brown spiders pushing out black widows, study finds. NATURE. By Susanne Rust, California Watch July 4, 2012. Alex Brandon/AP. The brown widow spider, a less-poisonous species than its cousin the ...

In experiments pairing brown widow spiders in container habitats with related cobweb spider species, the brown widows were 6.6 times more likely to kill southern black widows than other related ...

Of the over 46,000 known spider species, only about 200 have venom potent enough to be of medical concern. This is assuming, of course, that an individual isn’t allergic to specific components ...

Brown and black widow spiders are just two of the four species of widow spiders in Florida — all venomous. The U.S. National Weather Service in the Tampa Bay area spotted what seemed like a ...

The brown widow spider, a non-native species that first showed up in Florida from Africa in 1935, is eradicating its cousin the black widow from urban and suburban habitats in Florida and other ...

You've been bit: Recognizing symptoms and seeking treatment. Symptoms of a Black Widow bite may begin within 30 minutes after the bite and can include muscle cramping and body aches, fever and ...

Black widow spiders are being killed off in the U.S. The culprits are actually their cousins: brown widow spiders. Though the reason behind the killings is unknown, a new study suggests. Brown ...

Black widow spiders seem to be universally feared. But who's scared of a brown widow? The black widow should be quaking all eight of its boots, a new study suggests. In the United States, there's ...

The black widow spider is one of Kansas’ two native spiders, alongside the brown recluse. The black widow’s venom attacks human nerve cells, and potentially can be dangerous to people ...