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Photo#294886
Blue Caterpillar - Malacosoma

Blue Caterpillar - Malacosoma
Black Canyon of the Gunnison National Park, Montrose County, Colorado, USA
June 14, 2009
These seemed fairly common in the park. This one was seen just below the top of the rim in a habitat that included some Gambel oak, but I don't know what kind of plant it is on.

Moved

Looks to be one of the tent caterpillars
in the genus Malacosoma, in the guide here

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