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.

Virginia Tiger Moth

Virginia Tiger Moth

An almost pure-white, fluffy tiger moth with a few small black dots on the wings and body, whose caterpillar is the familiar pale yellow "yellow woolly bear."

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Silver Y Moth

Silver Y Moth

A fast-flying, day-active noctuid moth named for the metallic silver Y- or gamma-shaped mark on each mottled grey-brown forewing, famous for its long-distance migratory flights.

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Ailanthus Silkmoth (Cynthia Moth)

Ailanthus Silkmoth (Cynthia Moth)

A very large silkmoth with broad, tan-brown wings crossed by white, crescent-moon-shaped bands, closely associated with the fast-spreading tree-of-heaven that both feeds its larvae and carried the species around the world.

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Giant Leopard Moth Caterpillar

Giant Leopard Moth Caterpillar

A jet-black, bristly caterpillar that curls into a tight ball to reveal bright red-orange bands between its segments when disturbed.

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Banded Woolly Bear Moth

Banded Woolly Bear Moth

Best known as the black-and-rust-banded fuzzy caterpillar that famously curls into a ball when disturbed, this species matures into a plain golden-orange to tan tiger moth.

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American Dagger Moth Caterpillar

A pale, sulfur-yellow to cream fuzzball bristling with dense tufts of hair and long black 'pencils' projecting from both ends, the American dagger moth caterpillar is one of the most recognizable hairy caterpillars on hardwood trees in fall.

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Six-spot Burnet Moth

Six-spot Burnet Moth

A day-flying moth with glossy black-green forewings marked by six bold red spots and vivid crimson hindwings, a striking warning-colored insect often mistaken for a butterfly as it visits summer wildflowers.

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White-lined Sphinx Moth

White-lined Sphinx Moth

A fast, hovering moth often mistaken for a hummingbird as it darts between flowers at dusk, identifiable by the bold cream-colored stripe running across each streamlined brown forewing.

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Isabella Tiger Moth (Woolly Bear)

Isabella Tiger Moth (Woolly Bear)

Famous chiefly in its larval stage as the banded woolly bear caterpillar, this tiger moth's fuzzy black-and-rust-colored caterpillar is a familiar autumn sight, while the adult is a soft, tawny-orange moth with a stout, furry body.

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Regal Moth (Hickory Horned Devil)

Regal Moth (Hickory Horned Devil)

One of the largest moths in North America, with orange-red and gray-veined wings on the adult, best known for its enormous, formidable-looking caterpillar, the hickory horned devil, a blue-green giant bristling with long orange spines.

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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.

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Hag Moth Caterpillar (Monkey Slug)

Hag Moth Caterpillar (Monkey Slug)

One of the strangest caterpillars in North America, with curling, hair-covered arm-like projections that make it look uncannily like a tiny tuft of matted fur or a miniature spider monkey.

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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.

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Waxworm

Waxworm

A soft, cream-colored grub found tunneling through beeswax comb, the waxworm is the larva of the wax moth and has become a household staple as fishing bait and reptile feed.

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Fireflies Larvae Glowworm

Fireflies Larvae Glowworm

The larval form of fireflies, often called glowworms, are flattened, segmented crawlers that glow with a steady greenish light. These little predators hunt slugs, snails, and worms in damp ground.

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Cave Cricket

Cave Cricket

Humpbacked and wingless with absurdly long legs and antennae, this pale, silent insect thrives in the total darkness of caves, basements, and damp crawl spaces.

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Cave Spider

Cave Spider

A long-legged orb weaver adapted to the twilight zone of caves, spinning large webs across cavern mouths and dangling its egg sacs from silk threads deep within the darkness.

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Dobsonfly

Dobsonfly

A massive, primitive-looking insect whose males brandish absurdly long, curved mandibles used for wrestling rivals rather than for feeding.

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Tiger Swallowtail Caterpillar

Tiger Swallowtail Caterpillar

A smooth green caterpillar with a swollen thorax marked by two large fake eyespots, giving it an uncanny resemblance to a tiny snake's head.

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Stonefly Nymph

Stonefly Nymph

A flattened, armored aquatic nymph that clings tightly to rocks in swift, cold streams, serving as one of the most reliable signs of pristine water quality.

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Damselfly Nymph

Damselfly Nymph

A slender aquatic predator with three feathery tail gills, patiently stalking small prey among pond plants before emerging as a delicate flying damselfly.

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Dragonfly Nymph

Dragonfly Nymph

A stocky, camouflaged underwater predator that spends months or years stalking prey along the pond bottom before transforming into an aerial dragonfly.

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Caterpillar

Caterpillar

The soft-bodied, segmented larval stage of butterflies and moths, recognized by its worm-like shape, multiple pairs of stubby legs, and voracious appetite for leaves.

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Maggot

Maggot

A pale, legless, tapering grub that wriggles through rotting food and organic waste, the larval stage of a fly.

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