Macromoths of Northwest Forests and Woodlands
Protoboarmia porcelaria [Geometridae]
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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