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.
Locust Borer
A slender black longhorn beetle boldly striped with yellow, closely resembling a wasp, commonly seen visiting goldenrod flowers in autumn near black locust trees.
beetle
Locust
A large, powerful grasshopper capable of transforming from a solitary, harmless insect into a densely packed, migrating swarm when populations surge, historically famous for devastating crops across huge regions.
grasshopper-cricket
Cottonwood Borer
A large, boldly patterned longhorn beetle in black and chalky white checkerboard markings, often found clinging to the trunks of cottonwood and poplar trees near its larvae's root tunnels.
beetle
Emerald Ash Borer
A slender, bullet-shaped beetle with brilliant metallic-green coloring, whose bark-tunneling larvae feed almost exclusively within ash trees.
beetle
Migratory Locust
A grasshopper with a split personality, the migratory locust can switch from a quiet, solitary green insect into a boldly marked swarming form that travels in enormous, crop-devouring bands.
grasshopper-cricket
Desert Locust
A large, powerful grasshopper capable of forming some of the most extensive and historically devastating insect swarms on Earth, transforming from a solitary desert dweller into a densely packed migrating horde under the right conditions.
grasshopper-cricket
Squash Vine Borer
A day-flying, wasp-mimicking moth whose orange fuzzy hind legs and metallic wings make it easy to mistake for a wasp as it darts around squash vines.
moth
Old House Borer
A grayish-brown to nearly black longhorn beetle whose larvae bore extensively through structural softwood, capable of causing large galleries hidden beneath the wood surface.
beetleRocky Mountain Locust
Once the most destructive insect in North American history, this swarming grasshopper vanished within a few decades of forming the largest insect swarm ever recorded.
grasshopper-cricket
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
Differential Grasshopper
A large, robust grasshopper with a bold black herringbone pattern etched along its swollen hind legs, the differential grasshopper is one of the biggest and most recognizable pest grasshoppers in North America.
grasshopper-cricket
Red-legged Grasshopper
One of the most abundant and widespread grasshoppers in North America, the red-legged grasshopper is easily spotted by its reddish hind shins flashing amid a brown, mottled body.
grasshopper-cricket
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.
beetlePygmy Grasshopper
A tiny, ground-hugging grasshopper with an elongated pronotum extending back over its body, often found hopping along muddy pond edges.
grasshopper-cricket
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.
beetleGrasshopper
A robust, strong-jumping insect with short antennae and powerful hind legs, commonly seen springing away through grass and low vegetation on warm sunny days.
grasshopper-cricket
Carolina Grasshopper
Well camouflaged against dusty ground until it bursts into flight, the Carolina grasshopper flashes broad black hindwings edged in pale yellow before dropping back into invisibility.
grasshopper-cricket
Bark Louse
A small, soft-bodied insect often seen in dense, moving herds on tree trunks, the bark louse grazes on algae, lichen, and fungal residue coating bark surfaces.
other
Bordered Plant Bug
A dark, oval-bodied true bug with a distinct pale margin around its wing edges, often mistaken for a large ant or beetle when its nymphs cluster together in tight groups.
true-bugLouse Fly
A flattened, leathery-bodied fly that clamps onto fur or feathers with stout claws and scuttles sideways like a tiny crab rather than taking flight when disturbed. Several species shed their wings for good once they settle on a permanent host, spending the rest of their lives buried in fleece or plumage.
fly
Painted Grasshopper
A large, boldly striped grasshopper of South Asia whose vivid green, yellow, and black pattern warns predators that it has fed on toxic milkweed plants.
grasshopper-cricket
American Grasshopper
A large, strong-flying grasshopper related to the locusts of the Old World, the American grasshopper can occasionally form dense, damaging aggregations across the southern United States.
grasshopper-cricket
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.
beetlePsyllid
A tiny, sap-sucking hopper that resembles a miniature cicada and springs away in a blur when its host leaf is disturbed.
true-bug