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Northern Prairie Wildlife Research Center

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Caterpillars of Pacific Northwest
Forests and Woodlands

Photo Key to Species

Group A-1b -- Subgroups: Body wall smooth - The body wall of species in group A-1b is not extended into tubercles or warts.

Distinct spiracular line - Species in this subgroup have a distinct spiracular line, typically white, and the body is more or less uniformly colored or evenly patterned with faint markings.

Return to Photo Key to Species in Group A-1b
Next Section -- Dorsum color different than subspiracular area

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