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.

We understand if that sounds like the last thing you'd ever want to do, but the simple fact is that the brown widow spider's ...

No egg sacs of the invasive brown widow were preyed upon in the field transplant experiment, which suggests that the invasive species may not be recognized as prey by local predators.

The research team compared egg sac parasitism in the urban invasive brown widow spider to the desert white widow spider, the latter of which is native to Israel.

No egg sacs of the invasive brown widow were preyed upon in the field transplant experiment, which suggests that the invasive species may not be recognized as prey by local predators.

The lower suitability of brown widow egg sacs for the wasp parasitoid may explain the rapid invasive spread of brown widow spiders worldwide.

Let's talk about spider eggs, those tiny wonders of nature that hold the next generation of arachnids. Spider egg sacs, made of silk, are carefully crafted by mom spiders to protect their baby spiders ...

Brown and black widow spiders are just two of the four species of widow spiders in Florida — all venomous. ... By the spiny-shaped egg sacs located inside the web, ...

Israeli researchers have discovered that brown widow spiders,aggressively defend their egg sacs from parasitic wasps, offering insights into how certain species adapt and thrive.