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Northern Prairie Wildlife Research Center

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Macromoths of Northwest Forests and Woodlands

Thallophaga taylorata [Geometridae]

JPG-Thallophaga taylorata

Wingspan 3.3 cm. Forewing is slightly falcate, lightly speckled brown with a dark brown median band and postmedian line, or separate small postmedian spots. This geometrid is abundant in wet conifer forests in the Pacific West. Moths fly in the early spring. Caterpillars feed on the fronds of ferns, particularly sword fern (Polystichum munitum).

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