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.
Booklice (Psocid)
A tiny, soft-bodied, pale insect barely visible to the naked eye that grazes on mold and mildew in damp books, wallpaper, and stored goods.
other
Odorous House Ant
A dark, unassuming ant best known for releasing a smell reminiscent of rotten coconut when a worker is crushed.
ant
Psyllid
A tiny, sap-sucking hopper that resembles a miniature cicada and springs away in a blur when its host leaf is disturbed.
true-bug
Eastern Black Swallowtail Caterpillar
A striking green-and-black banded caterpillar dotted with yellow spots that flashes a bright orange forked horn when disturbed.
caterpillar-larva
Spotted Lanternfly
A large, strikingly patterned planthopper with gray spotted forewings that flash to reveal crimson hindwings when it leaps or takes flight.
true-bug
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.
caterpillar-larva
Black Swallowtail Caterpillar
A striking green caterpillar banded with black and dotted with yellow spots, famous for the bright orange, forked osmeterium it flicks out when disturbed.
caterpillar-larva
Snakefly
A slender predator named for its habit of rearing up its long, mobile neck like a tiny cobra when hunting or threatened.
other
Stink Bug
A broad, shield-shaped true bug that releases a pungent defensive odor when handled or crushed, commonly found on garden vegetables and fruit trees.
true-bug
Pill Bug
A gray, segmented, armor-plated crustacean that curls into a tight ball when disturbed, commonly found under rocks, logs, and damp garden debris.
other
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
Clover Mite
A speck-sized reddish mite that streaks a rust-colored stain if crushed and invades homes by the hundreds when lawns dry out or turn cold.
arachnid
Wall Spider
A tiny, flattened spider that spins a small disc-shaped web hugging the surface of a wall and darts sideways in a quick, erratic dash when disturbed.
spider
Snake Millipede
A slender, glossy, pale millipede that curls into a tight spiral when disturbed and often shows a faint row of reddish spots along its sides.
myriapod
Giant African Millipede
One of the largest millipedes in the world, a slow-moving, cylindrical detritivore covered in hundreds of tiny legs that curls into a tight defensive coil when disturbed.
myriapod
Underwing Moth
A master of camouflage whose bark-patterned forewings hide brightly colored, banded hindwings that flash into view only when the moth is disturbed in flight.
moth
Ruby Meadowhawk
A small, brilliant-red dragonfly of late summer meadows, so intensely colored that mature males seem to glow when perched low in the grass.
dragonfly
Flea Beetle
A tiny, shiny beetle that springs away like a flea when disturbed, leaving characteristic small round holes peppered across the leaves it feeds on.
beetle
Goliath Stick Insect
One of the largest stick insects in the world, this vivid green giant unfurls startling crimson underwings when startled, briefly abandoning its disguise as foliage.
mantis-stick
Money Spider
A tiny sheet-weaving spider, often seen drifting through the air on silk threads, traditionally said to bring good luck when it lands on you.
spider
Millipede
A slow-moving, cylindrical, many-legged detritivore with two pairs of legs per body segment, often seen curling into a tight spiral when disturbed.
myriapod
Bird Mite
A minute, pale to reddish mite that lives among feathers and nesting material of wild and domestic birds, sometimes dispersing into nearby buildings when nests are abandoned.
arachnid
Giant Prickly Stick Insect
A hefty, spine-covered phasmid that mimics dead leaves and curled bark, and when threatened, arches its abdomen like a scorpion's tail in a dramatic bluff display.
mantis-stick
Acrobat Ant
A small ant named for its habit of raising its distinctive heart-shaped abdomen up over its body like an acrobat when disturbed or alarmed.
ant