and he adds that the males and adolescent spiders between all species are especially hard to differentiate. “The southern black widow, Latrodectus mactans, lives in the southeastern U.S. west to ...

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 ...

The first signs of a black widow spider bite are usually a pinprick sensation, minor swelling, redness and a target-shaped sore, Medline Plus explains. Within 15 minutes to an hour of getting the bite ...