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Northern Prairie Wildlife Research Center

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Macromoths of Northwest Forests and Woodlands

Ennomos magnaria [Geometridae]

JPG-Ennomos magnaria

Wingspan 5.2 cm. Forewing is yellow-orange with many small dark spots and a sharply angular outer margin. This geometrid is common and widely distributed in western North America but is more common west of the Cascade Mountains. Moths fly in fall. Caterpillars feed on the foliage of alder (Alnus) and willow (Salix).

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