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Northern Prairie Wildlife Research Center

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Macromoths of Northwest Forests and Woodlands

Protoboarmia porcelaria [Geometridae]

JPG-Protoboarmia porcelaria

Wingspan 3.0 cm. Forewing is pale mottled brown with faint dentate median and submarginal lines. This geometrid is widely distributed in wet conifer forests. Moths fly in midsummer. Caterpillars feed on the foliage of species of Pinaceae, notably Douglas-fir (Pseudotsuga menziesii).

Similar species: Melanolophia imitata is larger, moths fly in early spring; Anavitrinella pampinaria forewing is gray with wavy black lines.

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