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.
Sun Spider
A fast-running, fiercely built desert arachnid with oversized jaws, often mistaken for a giant spider despite belonging to an entirely different arachnid order.
arachnidTrap-Jaw Ant
A large, fast-moving ant with elongated, straight mandibles that snap shut faster than almost any other animal movement, used to strike prey or fling the ant itself out of danger.
antTreehopper
A small, oddly shaped sap-feeding bug best known for an enlarged, often bizarre pronotum extending backward over its body, sometimes shaped like a thorn, leaf, or spike.
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Regal Jumping Spider
One of the largest and most striking North American jumping spiders, with a velvety black body, bold markings, and huge iridescent green or blue-lined eyes.
spiderPhorid Fly
A tiny, hump-backed fly best known for scuttling erratically across countertops and floors rather than taking flight, drawn to anything rotting or moist.
fly
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.
mothFungus Gnat
A small, dark, mosquito-like fly with long legs and delicate smoky wings, often seen weakly fluttering around houseplants or crawling across damp potting soil.
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Crazy Ant
A fast-moving, long-legged ant instantly recognizable by its erratic, non-stop scurrying in every direction rather than the orderly trails followed by most other ants.
ant
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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Daddy Longlegs
A small, oval-bodied arachnid carried on extremely long, thread-like legs, distinct from true spiders in having a one-piece fused body and no silk glands or web.
arachnid
Barn Spider
A brownish, mottled orb weaver famous as the inspiration for Charlotte's Web, commonly found spinning large nightly webs on barns, porches, and other structures.
spiderGiant 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-larvaAcrobat 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
American Copper
A small, bright orange-and-black butterfly with fiery copper-colored forewings and dusky gray hindwings edged in orange, commonly seen darting low over weedy fields and vacant lots.
butterfly
Two-Spotted Stink Bug
A boldly patterned black-and-orange predatory stink bug named for the pair of dark spots on its back, best known for hunting Colorado potato beetle larvae in gardens and fields.
true-bugSugar Ant
A common name for several large, sugar-loving ants, most famously the black-and-orange banded sugar ant of Australia, known for its persistent nighttime foraging around kitchens and picnics.
antSand Wasp
A fast, sun-loving solitary wasp with large green or grayish eyes and yellow-striped markings that digs burrows in loose sand and provisions them almost entirely with flies.
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Screech Beetle
This small, oval water beetle earns its name from the loud squeak it produces when picked up, a sound made by rubbing internal body parts together rather than by any vocal organ.
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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.
moth
Red-Shouldered Bug
A dark, flattened true bug with a bright red-orange collar across its shoulders, often seen clustering beneath goldenrain trees and other soapberry-family hosts.
true-bugPleasing Fungus Beetle
A shiny, smooth-bodied beetle marked with bold red or orange bands on a glossy black background, commonly found feeding on bracket fungi growing on dead or dying hardwood trees.
beetleMud Dauber Wasp
Slender, long-waisted wasps that build distinctive nests from mud, mud daubers stock their cells with paralyzed spiders. Their tube or urn-shaped mud nests are common under eaves and bridges.
waspGnat
A catch-all common name for a wide range of tiny, delicate flies, some no bigger than a grain of pepper, often seen hovering in small clouds near water, moist soil, or overripe produce.
flyGolden Tortoise Beetle
A tiny, dome-shaped beetle famous for its brilliant, mirror-like gold sheen, which it can dial down to a dull orange or spotted reddish tone within minutes when disturbed or handled.
beetle