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Northern Prairie Wildlife Research Center

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Caterpillars of Pacific Northwest
Forests and Woodlands

Vanessa cardui [Nymphalidae]

Dorsum black with white spots; base of primary setae (which are spines in this species) orange; venter off-white with irregular black markings; white hairs covering the body. This species is common and feeds on species of Asteraceae such as Canadian thistle, during July and August.

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