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.

Males usually have a brown or gray body with red ... to be bitten unless you disturb it. When black widow spider eggs hatch, the spiderlings (baby spiders) that emerge look very different from ...

but what’s the difference between a black widow spider vs brown recluse spider? Both of these are regarded as some of the ...

The spider may be brown or have red legs. The western black widow. This spider is usually a glossy black, although it can appear to be brown or dark purple. It may have the red hourglass shape on ...

The invasive brown widow spider, Latrodectus geometricus, is thought to be native to South Africa, but has moved to several places around the world and made a home there, including the United States, ...

The South African brown widow spiders had overall more distinct strains of bacteria compared to newer arrivals in Israel, where brown widows were first found in Tel Aviv in 1980 and in the United ...

Invasive brown widow spiders across three continents were highly infected with a single strain of Rhabdochlamydia, a bacterium that is related to major pathogens of humans and animals, including ...