Identify This Bug - Free AI Bug Identifier

The most common household intruder in the world. Look for the pinched waist, elbowed antennae, and trails of workers following scent paths to food. Carpenter ants (large, black, often winged in spring) matter most — they excavate damp wood and can signal a moisture problem in your walls. Fire ants, common in the southern US, deliver a burning sting that forms small pustules.

Flat, oval, fast, and most active at night. German cockroaches (small, two dark stripes behind the head) infest kitchens; American cockroaches (large, reddish) prefer basements and drains. Seeing one during daylight often means an established population. They don't bite, but they spread bacteria and their droppings are a major asthma and allergy trigger.

Gray, four dark stripes on the thorax, sponging mouthparts. Flies can't bite, but they mechanically transfer pathogens from waste to food. A sudden indoor swarm of large, sluggish flies (cluster flies) usually points to a wall void or attic they've used to overwinter — not a sanitation issue.

Slender body, long legs, one pair of wings, and that unmistakable whine. Only females bite. The bites form itchy welts within minutes. Mosquitoes are the world's most medically significant insect — in the US, West Nile virus is the main concern. Standing water as small as a bottle cap is enough to breed them.

Smooth, shiny bodies with a dramatic narrow waist — unlike fuzzy bees. Paper wasps build open honeycomb nests under eaves; yellowjackets nest in the ground and become aggressive in late summer. Unlike honey bees, wasps sting repeatedly. A baseball-sized gray paper nest with an entrance hole belongs to bald-faced hornets — keep your distance.

Fuzzy, robust pollinators. Honey bees die after one sting and only sting defensively. Bumble bees are larger, louder, and even more docile. Carpenter bees look like bumble bees but with a shiny, hairless abdomen — males hover aggressively but can't sting at all. If a honey bee swarm settles on your property, call a local beekeeper, not an exterminator.

Eight legs, two body segments — technically arachnids, not insects. Of the thousands of US species, only two are medically significant: the black widow (glossy black, red hourglass) and the brown recluse (violin marking, six eyes, limited to the central/southern US). Everything else, including the alarming-looking wolf spider, is functionally harmless pest control.

Shield-shaped, mottled brown, and slow. The brown marmorated stink bug is an invasive species that pours into homes each fall seeking warmth. They don't bite, sting, breed indoors, or damage the house — they're just persistent and smelly when crushed. Vacuum them rather than squashing.

Welcome guests — a single ladybug eats up to 5,000 aphids in its lifetime. The lookalike Asian lady beetle (orange rather than red, with an 'M' marking behind the head) swarms homes in autumn and can nip skin and stain surfaces, but is still essentially harmless.

Feathery antennae and wings held flat at rest distinguish moths from butterflies. The two indoor troublemakers: clothes moths (tiny, golden, avoid light — their larvae eat wool and silk) and pantry moths (zigzag flight near the kitchen — check your grains and pet food for webbing).

The largest group of insects on Earth, identified by hardened wing covers that meet in a straight line down the back. Indoors, watch for carpet beetles (small, mottled, larvae eat natural fibers) and powderpost beetles (tiny exit holes in hardwood with fine dust below — a structural concern).

Not insects but parasitic arachnids that attach and feed for days. The blacklegged (deer) tick transmits Lyme disease; the lone star tick (single white dot) can trigger a red-meat allergy. Found one attached? Remove it promptly with fine-tipped tweezers and photograph it for identification — species matters for disease risk.