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.
Mealworm Beetle
A shiny, oval, dark reddish-brown to nearly black beetle whose larva, the familiar 'mealworm,' is a common sight in stored grain products.
beetleEastern Black Swallowtail Caterpillar
A striking green-and-black banded caterpillar dotted with yellow spots that flashes a bright orange forked horn when disturbed.
caterpillar-larvaPolyphemus 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.
caterpillar-larva
Mud Wasp
A slender, thread-waisted solitary wasp famous for plastering rows of tube-shaped mud cells under eaves and porch ceilings, each one stocked with paralyzed spiders for its larva.
waspChigger
A nearly microscopic mite larva that waits in clusters on grass tips for a passing host, taking a single brief meal before dropping away unseen. Only this larval stage is parasitic; the free-living adult spends its life hunting tiny prey in the soil.
arachnid
Case-bearing Clothes Moth
A tiny, drab tan moth whose larva constructs and carries a small portable silk case as it feeds on wool, fur, and other keratin-based fibers, making it a recognized fabric pest in homes.
mothWater Penny Beetle
A flattened, coin-shaped larva that clings almost invisibly to the surface of submerged stream rocks, named for its uncanny resemblance to a small penny.
aquatic-insect
Varied Carpet Beetle
A tiny beetle mottled with white, brown, and yellow scales that, as a fuzzy larva, quietly grazes on natural fibers tucked away in closets and attics.
beetle
Woolly Bear Caterpillar
A densely bristled caterpillar banded in black at both ends with a rusty-orange middle section, famous in folklore for supposedly predicting winter severity and for rolling into a tight ball when touched.
caterpillar-larva
Casemaking Clothes Moth
A small mottled moth whose larva builds a tiny portable silk case, dragging its own protective shelter along as it grazes on wool and fur.
moth
Banded Woolly Bear Moth
Best known as the black-and-rust-banded fuzzy caterpillar that famously curls into a ball when disturbed, this species matures into a plain golden-orange to tan tiger moth.
moth
Tarantula Hawk
One of the largest wasps in the world, with a glossy metallic blue-black body and vivid burnt-orange wings, famous for hunting tarantulas to provision a single underground burrow for its larva.
wasp
Southern Flannel Moth (Puss Caterpillar Moth)
A small, densely furred tan-to-orange moth best known for its unusual larva, a soft-looking, cat-tailed caterpillar whose fluffy coat hides rows of venomous spines.
mothLeaf Miner
Rather than chewing from the outside, a leaf miner larva tunnels between the upper and lower surfaces of a leaf, leaving behind pale, winding trails or blotches that trace its path as it feeds.
fly
Caddisfly
A moth-like insect whose larvae are famous for constructing portable protective cases out of silk and whatever sand, twigs, or debris they can find.
aquatic-insect
Bagworm Moth
A moth best known for its larva's habit of constructing and living inside a spindle-shaped case of silk and plant debris that hangs from twigs, with adult males a plain sooty-winged moth and females remaining wingless and grub-like inside the bag for life.
moth
Lacewing
A delicate, pale green insect with large, transparent, intricately veined wings and shining golden or copper-colored eyes, valued as a natural predator of aphids in its larval form.
other
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.
mothSawfly
A wasp relative that never stings, best known for its caterpillar-like larvae that strip leaves from roses, pines, and other garden plants in tidy rows.
waspGall Midge
A delicate, mosquito-like fly whose larvae trigger plants to grow strange, often colorful swellings called galls, each species usually tied to one particular host plant.
fly
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.
beetleSoldier Fly
A wasp-mimicking fly with a flattened, often metallic body that spends its larval life quietly breaking down decaying plant matter or aquatic debris.
fly
Giant Swallowtail
The largest butterfly in North America, a dark brown giant marked with a bold diagonal yellow band and yellow spotting that forms an X-like pattern when the wings are spread.
butterfly
Long-Legged Fly
A jewel-bright little fly that flashes metallic green, blue, or bronze in the sunlight as it darts across leaves on comically long, stilt-like legs, pausing to perform quick territorial displays. Both adults and larvae are active hunters of even smaller insects, making this tiny fly a useful predator in gardens and wetlands alike.
fly