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Woolly Bear Caterpillar
Pyrrharctia isabella
47.657, -122.287
Field Notes
Description:
Dense cover of hairs over body, midabdominal segments with reddish orange hairs, anterior and
posterior segments with black hairs.
Habitat:
Found at lower elevations in woodlands and wet forests; widely distributed in western North America and
particularly common west of the Cascade Mountains.
Notes:
Caterpillars are very common; feed on herbs, such
as nettles, during fall and spring; overwintering, with development completing in the spring. Adults are nocturnal; fly in
midsummer.
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