Not all adult black widows exhibit the red hourglass on the ventrum underside or top of the abdomen — some may have a pair of red spots or have no marking at all. Female black widows often exhibit various red markings on the dorsal or top side of the abdomen, commonly two red spots. However, black widow young are believed to have at least some sort of marking on their abdomens. Adult male black widows are half the size of the females, and are usually gray or brown rather than black and red; while they may sometimes have an hourglass marking on their ventral abdomen, it is usually yellow or white, not red. Variation in specifics by species and by gender is great; any spider exhibiting a red hourglass or a pair of large red round spots on the ventral abdomen with an otherwise black shiny body is an adult female black widow.
Always seek immediate emergency medical care. An anti-venom medication is sometimes given for black widow spider bites. Doctors use different types of medications to treat spider bites, including pain relievers, muscle relaxants, and/or corticosteroids. Sometimes hospitalization is required after black widow or brown recluse spider bites.If possible, retrieve the spider and bring it with you to the health care practitioner so that it can be definitively identified.A tetanus booster shot may be necessary, depending upon the date of the patient's last immunization.Calling the Poison Control Center (24-hour hotline at 1-800-222-1222 in the U.S.) allows you to reach toxicology experts who can work with a health care provider in establishing the proper diagnosis and management of a spider bite.
Guy Perea Presidential Elector President of The United States