These Are The Most Dangerous Insects in the U.S.

Brown Recluse Spider

The brown recluse usually lives under rocks or in piles of wood. Its back has a unique scar that looks like a violin. The poisonous spider can also hide in basements, attics, crawl spaces, and shoes or clothes that aren't worn very often.

Deer Tick

After hiding in grass or heavy vegetation, ticks bite people, dogs, and cats to get blood. Many tick species are innocuous, but the deer tick may carry Lyme disease, anaplasmosis, and babesiosis, which can cause fever, neurological disorders, and joint problems if untreated.


Scorpions are nocturnal pests typically found in warm, dry climates like the desert. Most American varieties don t have lethal venom like the ones in Africa, but their sting is still painful.

Yellow Jacket

Yellow jackets are aggressive wasps that attack repeatedly when threatened, unlike honeybees. Even worse, yellow jacket allergies transport over 500,000 individuals to the ER each year.


Almost everyone has experienced an annoyingly itchy mosquito bite, but did you know that these pests can also spread dangerous diseases like malaria, yellow fever, West Nile, and Zika?

Red Fire Ant

There are a lot of red fire ants in the southern United States. They live in huge mounds that are two to four square feet in size. Do not move a mound that you see on the ground or near a building base.

Black Widow Spider

The black widow spider is a small but scary pest that has a red hourglass shape on its abdomen. It hurts muscles, makes them twitch, and gives you stomach cramps. Its bite is 15 times more poisonous than a rattlesnake's.