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The black widow is a medium sized spider about a half inch long. Two species are common to the United States The southern black widow. This spider has a shiny, black, globe shaped abdomen. You .The animals most at risk from the black widow’s bite are insectsand male black widow spiders. Females sometimes kill and eat their counterparts after mating in a macabre behavior that gave the .”Black widow spiders belong to the family Theridiidae, commonly referred to as comb footed spiders,” Sewlal said, adding that comb footed spiders get their name “because they have a series of .Black Widow Spider Bite Facts Of the , types of spiders, the black widow is probably the one best known and feared. Although spiders are often blamed for all kinds of symptoms, from local itching to diffuse rashes, the fact is that spiders rarely bite humans, and in fact, most spider bites do not even break the skin..Watch video The female black widow spider, though it is the most venomous spider in North America, seldom causes as it injects a very small amount of poison when it bites. Reports indicate human mortality at well less than from black widow spider .Black widow spiders are generally considered beneficial since they eat so many insects. However female black widow spiders can humans when they are provoked. The black widow spider delivers the most toxic spider bite .The black widow spider produces a protein venom that affects the victim’s nervous system. Some people are slightly affected by the venom, but others may have a severe response. The first symptom .