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Northern Prairie Wildlife Research Center

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Caterpillars of Pacific Northwest
Forests and Woodlands

Euphydryas chalcedona [Nymphalidae]

Black and white with primary setae as black spines on an orange base. This caterpillar overwinters and is commonly found on penstemon and snowberry as late as June and July.

Return to Photo Key to Species in Group B-3a - Spines with a single point
Next Section -- Mourningcloak Butterfly

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