The stinging insects that most commonly cause allergic reactions belong to a group of the hymenoptera, the insects with membranous wings. These include bees, wasps, hornets, and yellow jackets. Stings from wasps and bees are the most common. The female is much larger than the male and is one of the largest spiders in the United States. Males generally do not bite.
Females bite only when hungry, agitated or protecting the egg sac.
The black widow is not aggressive. They are usually found in dry, secluded, dimly lit areas. More than 80 percent of all bite victims are adult men. Black widow spider bites are the leading cause of death from spider bites in the United States. The venom is 14 times more toxic than rattlesnake venom.