Macromoths of Northwest Forests and Woodlands
Euxoa auripennis [Noctuidae]
Wingspan 3.6 cm. Forewing is contrasting black and lavender with large discal spots. This noctuid is common and widely distributed in western North America occurring in ponderosa pine and juniper-pinyon pine forests. Moths fly in late summer. Caterpillars feed on herbs at the soil surface.
Similar species: Euxoa costata forewing is red with a white costal margin and white discal spots, abundant in ponderosa pine forests east of the Cascade Mountains; Euxoa basalis forewing is red with a white basal patch instead of the white costal margin, abundant in the Rocky Mountain region.
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