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.
Cloudless Sulphur
A large, bright lemon-yellow butterfly that flies with strong, direct wingbeats and rarely shows any dark markings, giving it an almost uniformly 'cloudless' appearance.
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Clouded Sulphur
A medium-sized pale yellow butterfly with crisp black wing borders, commonly seen fluttering low over clover fields and roadside meadows across North America.
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Orange Sulphur
A vivid orange-and-yellow butterfly with sharp black wing borders, one of the most common butterflies over open fields and alfalfa crops throughout North America.
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Orange-barred Sulphur
One of the largest sulphur butterflies, bright yellow with a bold band of deep orange across the forewing and a solid orange wash on the hindwing in males.
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Sleepy Orange
A small, deep orange sulphur butterfly with dark wing borders and a low, wandering flight, named for a faint dark mark that suggests a half-closed, sleepy eye.
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Little Yellow
A tiny, pale lemon-yellow butterfly with a thin, crisp black wing border, fluttering close to the ground in fields and roadsides across the southern and eastern United States.
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Dogface Butterfly
A striking yellow sulphur butterfly whose forewing pattern forms the silhouette of a dog's or poodle's head complete with a dark 'eye' spot, visible in good light.
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Brimstone Butterfly
A sulphur-yellow, leaf-shaped butterfly whose folded wings mimic a fresh green leaf so convincingly it is often credited as the origin of the word 'butterfly'.
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American Dagger Moth Caterpillar
A pale, sulfur-yellow to cream fuzzball bristling with dense tufts of hair and long black 'pencils' projecting from both ends, the American dagger moth caterpillar is one of the most recognizable hairy caterpillars on hardwood trees in fall.
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