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.

Female brown widows, like female black widows, are larger and more noticeable than males, which are smaller and less colorful. While brown widow venom is venomous, it's less potent than the venom ...

In the past couple decades, researchers have noticed black widow spiders (adult female shown at right) commonly being displaced by the brown widow (adult female at left), a fellow species in the ...

If you get a close enough look, you will notice that brown recluses have six eyes, while black widow spiders have eight eyes. Female black widow spiders are well known for their red hourglass ...

No wonder they’re called widow spiders. To get sex with an older female, a male might fight off many rivals or perform courtship gestures for up to six hours. At the magical moment, he’d place ...

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 ...