Common Spiders Found in the United States Black Widow: Highly venomous, recognizable by its glossy black body and the red hourglass shape on its abdomen. Its bite can be life-threatening. Brown Recluse: Considered dangerous; its bite may lead to severe tissue damage. Hobo Spider: Has a toxic bite that causes pain, though fatalities are extremely rare. Black House Spider: Produces strong venom that can result in sharp pain. Mouse Spiders both sexes: Their bites are painful but seldom pose a serious risk to humans. Wolf Spider: Large and quick-moving; its bite may cause mild irritation but is not medically significant. Huntsman Spider: Non-dangerous to people and helpful in reducing insect populations. Garden Orb-Weaver: Known for weaving large webs; poses no threat to humans. St. Andrews Cross Spider: Easy to identify by the distinctive cross-shaped position it adopts in its web. Trapdoor Spider: Resides in burrows and generally harmless to humans.