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.
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.
otherSoil Mite
A microscopic, heavily armored mite found by the millions in a single handful of soil, quietly breaking down leaf litter and helping build the fertile ground beneath forests and fields.
arachnid
Salt Marsh Moth
A fluffy white tiger moth with black-speckled forewings and an orange-and-black abdomen, best known through its fast-moving, densely bristled caterpillar that wanders widely in late summer.
moth
Ruby Tiger Moth
A small, warm reddish-brown tiger moth with plain rosy-tinted forewings and pink-flushed hindwings dotted with dark spots, often seen resting openly on vegetation in sunny, open habitats.
moth
Silkworm
Plump, pale, and utterly dependent on humans, the silkworm is the domesticated caterpillar behind thousands of years of silk production, spinning a single continuous thread of silk to form its cocoon.
caterpillar-larvaRiffle Beetle
Tiny and unassuming, riffle beetles cling tightly to submerged rocks in swift, clean streams for their entire lives, making them one of the most reliable living indicators of healthy water.
beetle
Red Admiral
A fast-flying, strikingly patterned butterfly with velvety black wings crossed by a bold orange-red band and white-spotted tips, often seen basking on tree trunks or sipping from fallen fruit.
butterflyPredatory Stink Bug
Unlike its plant-feeding relatives, the predatory stink bug is a hunter that spears caterpillars and beetle larvae with a stout beak. The spined soldier bug is a familiar shield-shaped garden ally.
true-bugNet-winged Beetle
A soft-bodied beetle with broad, ridged wing covers patterned in bold orange or red and black bands, whose netlike wing venation and vivid coloring warn potential predators of its unpalatability.
beetle
Milkweed Tussock Caterpillar
Rows of dense orange, black, and white hair tufts run down the back of this milkweed specialist, whose young larvae feed in tight groups that skeletonize milkweed leaves before dispersing to feed alone.
caterpillar-larva
Monarch Butterfly
A large butterfly with bold orange wings crossed by black veins and a black, white-spotted border, famous for its multi-generational migration between North America and central Mexico.
butterfly
Old Lady Moth
A large, dusky brown noctuid moth with an intricate, wood-grain-like pattern of dark streaks and pale flecks across broad wings, often found resting motionless in sheds and against tree bark by day.
moth
Julia Butterfly
A brilliant, elongated-winged orange butterfly of tropical and subtropical habitats, with males glowing an intense unmarked orange and females showing subtler markings and a hint of black striping.
butterfly
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
Marsh Treader
An extremely slender, thread-like true bug that walks slowly and deliberately across the water's surface on stilt-like legs, resembling a tiny floating twig as it hunts among marsh vegetation.
aquatic-insect
Longhorn Beetle
A beetle instantly recognizable by antennae often longer than its own body, ranging from small woodland species to large, dramatically patterned tropical and temperate forms.
beetle
Mediterranean Flour Moth
A small, pale grey moth with fine dark wavy lines on its forewings, whose larvae spin webbing through flour, grain, and other stored dry food products, making it a well-known pest of mills and pantries.
mothLily Leaf Beetle
A brilliant scarlet-red beetle with a jet-black head, legs, and underside that feeds almost exclusively on true lilies and fritillaries, often stripping leaves down to bare stems.
beetle
Flower Chafer Beetle
Often clad in brilliant metallic greens, golds, and bronzes, flower chafers are day-flying scarab beetles that feed on flowers. Many buzz loudly in flight and keep their wing covers closed as they take off.
beetle
Karner Blue
A tiny, silvery-blue butterfly dependent entirely on wild lupine and now known chiefly from a small number of protected sandy-soil habitats in the Great Lakes and Northeast.
butterfly
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
Lantern Bug (Peanut-head Bug)
A bizarre rainforest planthopper whose head is drawn out into a huge, hollow, peanut-shaped snout, and whose hindwings flash a pair of large eyespots resembling the face of a small reptile.
true-bug
Emperor Moth
A striking silk moth with a large eyespot on each of its four wings, showing pronounced differences between the smaller, orange-brown, day-flying males and the larger, greyer, night-flying females.
moth
Jorō Spider
A large, strikingly colored East Asian orb weaver with yellow-and-blue-gray banding, now spreading rapidly across the southeastern United States and building enormous golden webs.
spider