![]() ![]() In the US, they are found in all the four southwestern deserts (Great Basin, Sonoran, Chihuahuan, and Mojave). In North America, the black widow spiders can be found in the United States and Canada. The black widow spiders can be found in all the continents except Antarctica. The spiders hang upside down on the web once completed. Once they settle in these areas, the black widow spiders spin irregular webs which are mainly built at night and near the ground level. Indoors, the black widow spider prefers cluttered areas such as garages, crawl space, and basements. The spiders are rarely found indoors but may enter human houses on items brought inside. They are found in marginal land areas with sparse vegetation, hollow logs, and stumps. The black widow spiders inhabit mainly the warm regions of the world. Medication is recommended as soon as possible to relieve the victim of the pain. These symptoms may last 3-7 days or persist for more than one week. Symptoms of bites include increased blood pressure, fever, nausea, and sweating. The bites only occur when they cannot escape danger. However, the spiders rarely bite and bites are rarely fatal. The female spiders have large venom glands and their bite is particularly harmful to large animals including humans. They produce unusually potent venom that causes a condition known as latrodectism. ![]() The black widow spider can grow up to 0.39 inches in size while some female measure about 0.51 inches in body length. The male spider has various red or red and white marks on the upper part of the abdomen while the female does not have any bright markings. Some possess a pair of red spots on their back while others do not have markings at all. The black widow spiders are popular for the red hourglass shape under their abdomen and are typically shiny black or dark brown in color. Black widow spiders can be found on every continent except Antarctica and mainly inhabit warmer regions. Black widow spiders are small arachnids but are one of the deadliest spiders in the world. The spiders derive their name from the popular assertion that the female black widow spider feeds on the male spiders after mating. ![]()
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