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.
Great Silver Water Beetle
One of the largest beetles in Europe, the great silver water beetle is a glossy jet-black giant that rows through weedy ponds carrying a silvery film of air trapped beneath its body.
beetle
Ten-lined June Beetle
A large, brown scarab beetle marked with bold white racing stripes down its wing covers, known for its loud buzzing flight and hissing defensive squeak.
beetle
Devil's Coach Horse Beetle
A large, matte-black rove beetle that raises its flexible abdomen up and over its back like a scorpion's tail and gapes its jaws when threatened, one of the biggest and most dramatic rove beetles in Europe.
beetle
Metallic Wood-boring Beetle
The North American common name for jewel beetles, emphasizing the wood-tunneling habits of their larvae, which leave telltale flattened, D-shaped exit holes in bark of stressed or dying trees.
beetle
Wireworm
Slender, shiny, and armor-hard, the wireworm is the long-lived soil-dwelling larva of a click beetle, spending years underground feeding on seeds, roots, and tubers before ever taking beetle form.
beetle
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.
beetle
Green Peach Aphid
A small, pale yellow-green aphid with an exceptionally broad host range, recognized as one of the most widespread and adaptable aphid species found on garden vegetables, ornamentals, and stone fruit trees.
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Mealworm
A tan, segmented larva with a shiny hard exoskeleton that tunnels through stored grain and flour before transforming into a darkling beetle.
caterpillar-larva
Sowbug
A slate-gray, oval, armor-plated crustacean that shuffles through damp leaf litter on seven pairs of legs, recognizable by its overlapping segmented shell and pair of trailing tail-like appendages.
other
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.
caterpillar-larva
Leafhopper
A small, wedge-shaped insect that darts sideways and springs away in quick hops when disturbed, often brightly striped or patterned and found clinging to the underside of leaves.
true-bug
Leafcutter Ant
A highly organized ant famous for marching in long trails while carrying disc-shaped pieces of leaf many times their own size, which they use to cultivate fungus gardens deep underground.
ant
Whitefly
A tiny, moth-like white insect that clusters on the undersides of leaves and bursts into a snowy cloud when the plant is disturbed. Despite the name, it is not a true fly but a sap-feeding relative of aphids and scale insects.
true-bug
Dobsonfly
A massive, primitive-looking insect whose males brandish absurdly long, curved mandibles used for wrestling rivals rather than for feeding.
aquatic-insect
Leafcutter Bee
A stout, dark-bodied bee best known not for how it looks but for the neat, circular or oval notches it cuts from leaves, which it uses to line and seal its nest cells.
bee
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.
caterpillar-larva
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.
aquatic-insect
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.
aquatic-insect
Dragonfly Nymph
A stocky, camouflaged underwater predator that spends months or years stalking prey along the pond bottom before transforming into an aerial dragonfly.
aquatic-insect
Jerusalem Cricket
A large, wingless, ground-dwelling insect with a shiny amber body, a strikingly human-like face, and a robust, banded abdomen, most often uncovered while digging in soil.
grasshopper-cricket
Grape Leaffolder Caterpillar
This small green caterpillar stitches grape leaves together with silk into a rolled shelter, feeding hidden inside its own leafy tube and leaving skeletonized patches behind.
caterpillar-larva
Monarch Caterpillar
A boldly banded caterpillar in white, yellow, and black stripes, unmistakable as it munches its way through milkweed leaves before transforming into North America's most famous migratory butterfly.
caterpillar-larva
Maggot
A pale, legless, tapering grub that wriggles through rotting food and organic waste, the larval stage of a fly.
caterpillar-larva
Bristly Rose Slug
Despite its caterpillar-like, slug-shaped body covered in fine bristles, this pale green larva is actually the offspring of a small sawfly and feeds on rose leaves by skeletonizing them from the underside.
caterpillar-larva