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.
Elm Leaf Beetle
A yellow-green leaf beetle with dark side stripes that skeletonizes elm foliage and gathers in large numbers to overwinter in buildings.
beetleWhite Grub
A pale, C-shaped larva with a brown head capsule and six stubby legs, spending its entire early life hidden underground feeding on roots before emerging as a stout May or June beetle.
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Cucumber Beetle
A small, brightly colored beetle patterned with black spots or stripes on a yellow-green background, commonly seen crawling on the flowers and leaves of cucumber and squash plants.
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Diving Beetle
A smooth, streamlined, dark-bodied beetle with broad, fringed hind legs built for swimming, an active underwater predator that carries its own air supply beneath its wing covers.
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Mexican Bean Beetle
A copper-colored, spotted beetle resembling an overgrown ladybird that feeds on bean plant leaves along with its spiny yellow larvae.
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Green June Beetle
A large, velvety green scarab beetle with bronze edges that flies with a loud buzzing drone on warm summer days, often seen around ripening fruit.
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Eyed Click Beetle
A large, mottled black-and-white beetle marked with two prominent false eyespots on its thorax, well known for its ability to snap its body into the air with an audible click when flipped onto its back.
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Palo Verde Beetle
One of the largest beetles in North America, a heavy, dark reddish-brown longhorn beetle with long spiny antennae and a loud, buzzing flight that emerges from the desert soil around palo verde and mesquite trees in summer.
beetleLily 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.
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Deathwatch Beetle
A small, mottled brown wood-boring beetle famous for the faint ticking sound it makes by tapping its head against wood, historically associated with old timber-framed buildings.
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Powderpost Beetle
A small, slender reddish-brown to dark brown beetle whose larvae tunnel through seasoned hardwood, reducing it internally to a fine, powdery frass.
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Hercules Beetle
One of the largest beetles in the world, with males bearing dramatic, forceps-like horns nearly as long as the rest of their armored, olive-green body.
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Japanese Beetle
A small, iridescent beetle with a metallic green head and thorax and coppery-bronze wing covers, notorious for skeletonizing the leaves of roses, grapevines, and hundreds of other garden plants.
beetlePine Sawyer Beetle
A large, long-antennaed longhorn beetle of pine and spruce forests, mottled gray-brown to black, that produces a rasping sound when handled and whose larvae tunnel deep into dead or dying conifer wood.
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Drugstore Beetle
A tiny brown beetle with grooved wing covers that once earned its name by burrowing into dried herbs and medicines kept on pharmacy shelves.
beetleNet-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.
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Black Fly Larva
Anchored to submerged rocks in fast-flowing streams by a silken thread, the black fly larva bends into the current and combs the water for drifting particles with a pair of delicate, fan-shaped feeding brushes.
aquatic-insectAlderfly Larva
Fringed with feathery gill filaments along its sides, the alderfly larva crawls through soft pond and stream sediments hunting smaller invertebrates before eventually leaving the water entirely to pupate on land.
aquatic-insectPolyphemus Moth Caterpillar
A plump, apple-green giant silk moth larva with rows of silvery spots that swells to the size of a large finger before spinning a papery brown cocoon.
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Milkweed Leaf Beetle
A large, boldly colored leaf beetle in glossy orange-red with irregular black patches, found feeding exclusively on milkweed plants alongside monarch caterpillars.
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Whitefringed Beetle
A stout gray-brown weevil named for the pale, fringe-like stripe along the outer edge of its wing covers, whose root-feeding larvae are a recognized issue in pastures and row crops.
beetlePleasing 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.
beetleGolden 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.
beetleWater Scavenger Beetle
Rounded and glossy, water scavenger beetles paddle through weedy ponds gathering air with a short antenna rather than a snorkel-like tube, feeding mostly on decaying plant matter and algae.
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