Brown widow spiders vary widely in their colors, from very light to very dark, but are not shiny like black widow spiders. Their coloring is mottled, and females have black accent stripes.

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 ...

Black widows are notorious spiders identified by the colored, hourglass-shaped mark on their abdomens. Several species answer to the name, and they are found in temperate regions around the world.