The female western black widow is different than the male ... Scientific Name: Bothriocyrtum californicum California trapdoor spiders are experts in home construction, neatly lining their space ...

Their coloring is mottled, and females have black accent stripes ... and now appear to be spreading north through California. Brown widow spiders like to live in secluded, woody vegetation ...

Residents of southern California (or other southern states ... such as markings that are similar to those on the black widow spider. They're also venomous, and while their bite may not be as ...

Most exposures to black widow spider venom are accidental, but in a rare medical case, the exposure was intentional.

Fortunately, fatalities are fairly rare; the spiders are nonaggressive and bite only in self-defense, such as when someone accidentally sits on them. The animals most at risk from the black widow' ...

Nan Songer, a spider expert living in California, played an integral part in the Allies ... Songer began experimenting with black widows (genus Latrodectus), which produce a silk dragline composed of ...

The black widow spider can be found on every continent except Antarctica. Its venom is toxic and painful, leaving victims to feel the effects long after the bite. Following is a transcript of the ...

The first occurrence of a dangerous spider known as the Black Widow has been confirmed in Slovakia. The adult female arrived in Slovakia from California in a shipment of machine parts goods. She also ...