Bug Identifier

Bug Encyclopedia

Search and identify bugs & insects — beetles, butterflies, moths, ants, bees, spiders and more — with size, habitat, danger, behavior, and how to tell them apart.

House Ant

House Ant

A small, dark brown to black ant that forages in loose trails along countertops and baseboards and releases a distinctive rotten-coconut smell when crushed.

ant
Old House Borer

Old House Borer

A grayish-brown to nearly black longhorn beetle whose larvae bore extensively through structural softwood, capable of causing large galleries hidden beneath the wood surface.

beetle
Io Moth

Io Moth

A striking yellow (male) or reddish-brown (female) silkmoth instantly recognizable by the large, dark eyespot ringed in blue and black on each hindwing, flashed suddenly to startle predators.

moth
Common House Mosquito

Common House Mosquito

A slender, drab brown mosquito that emerges at dusk from catch basins and forgotten containers to fill neighborhoods with its familiar high-pitched whine.

fly
Winter Moth

Winter Moth

A small tan-brown moth unusual for flying in the cold of late autumn and early winter, with strongly dimorphic sexes: fully winged males and flightless, near-wingless females that climb tree trunks to lay eggs.

moth
Eyed Hawk-Moth

Eyed Hawk-Moth

A pinkish-brown hawk-moth that reveals a pair of large, blue-and-black eyespots on its hindwings when threatened, using the sudden flash of "eyes" to startle would-be predators.

moth
Bogong Moth

Bogong Moth

A modest brown, mottled moth famous for its extraordinary mass seasonal migration across thousands of kilometers to cool alpine caves in the Australian mountains, forming one of the largest known insect migrations by biomass.

moth
Drinker Moth

Drinker Moth

A stout, furry moth with warm tawny-orange to buff-brown wings marked by two small white spots on each forewing, named for its caterpillar's habit of drinking water droplets from grass blades.

moth
Tussock Moth

Tussock Moth

A moth with a striking split lifestyle: winged, drab gray-brown males fly to seek out flightless, grub-like females, while the ornate caterpillars sport dense tufts of colorful bristly hair.

moth
Garden Tiger Moth

Garden Tiger Moth

A boldly patterned tiger moth with chocolate-brown, cream-marbled forewings that flash to reveal vivid orange hindwings dotted with blue-black spots when the moth is disturbed.

moth
Armyworm Moth

Armyworm Moth

A plain tan to reddish-brown moth whose caterpillars are famous for marching in large groups across fields, stripping grasses and grain crops as they move.

moth
Lime Hawk-Moth

Lime Hawk-Moth

A stout, angular-winged hawk-moth in muted greens, browns, or pinks with deeply scalloped wing margins, closely tied to lime (linden) trees for its larval development.

moth
Imperial Moth

Imperial Moth

One of the largest and most variably patterned silk moths in North America, with broad yellow wings mottled in shades of purple, brown, and pink, and a caterpillar that can grow to impressive size on a wide range of forest trees.

moth
Hummingbird Moth

Hummingbird Moth

Hovering at flowers with a blur of wings and a long uncoiling tongue, the hummingbird moth is easily mistaken for a tiny hummingbird. These plump, fast-flying hawk moths feed on nectar in broad daylight.

moth
Polyphemus Moth

Polyphemus Moth

A large tan-to-golden-brown silkmoth named for the mythological one-eyed giant, thanks to the single large, transparent eyespot on each hindwing that flashes into view when the moth is startled.

moth
Tobacco Hornworm Moth (Carolina Sphinx)

Tobacco Hornworm Moth (Carolina Sphinx)

A large, streamlined gray-brown sphinx moth with six pairs of orange spots along its abdomen, best known as the adult stage of the tobacco hornworm caterpillar that feeds on tomato and tobacco plants.

moth
Small Emperor Moth

Small Emperor Moth

A striking day-flying moth with large eyespots on all four wings, gray-brown coloring in males and paler gray in the larger females, native to heathlands and open countryside across Europe.

moth
Hummingbird Hawk-Moth

Hummingbird Hawk-Moth

A day-flying moth that hovers in front of flowers on blurring wings while unspooling a long proboscis to sip nectar, so closely mimicking a hummingbird in flight that it is frequently mistaken for one.

moth
Achemon Sphinx Moth

Achemon Sphinx Moth

A large, streamlined sphinx moth with pinkish-brown forewings marked by darker scalloped patches and rosy pink hindwings edged in black, closely tied to grapevines as a larval host.

moth
Pine Processionary Moth

Pine Processionary Moth

An unremarkable grey-brown moth known almost entirely through its larvae, which build large silken nests in pine trees and travel to feed in long, head-to-tail processions covered in fine defensive hairs.

moth
Tomato Hornworm Moth (Five-spotted Hawkmoth)

Tomato Hornworm Moth (Five-spotted Hawkmoth)

A large, robust grey-brown sphinx moth named for the five pairs of yellow-orange spots along its abdomen, best known as the adult form of the large green tomato hornworm caterpillar familiar to home gardeners.

moth
Polyphemus Moth Caterpillar

Polyphemus Moth Caterpillar

A plump, apple-green giant silk moth larva with rows of silvery spots that swells to the size of a large finger before spinning a papery brown cocoon.

caterpillar-larva
Chinese Oak Silkmoth

Chinese Oak Silkmoth

A large, rust-brown silkmoth with prominent transparent eyespots on all four wings, native to oak forests of China and long cultivated there for coarse tussah silk production.

moth
Great Tiger Moth

Great Tiger Moth

A boldly patterned tiger moth with chocolate-brown and cream lace-like markings on the forewings and vivid orange hindwings spotted with blue-black, one of the most visually striking moths in temperate gardens.

moth