Macromoths of Northwest Forests and Woodlands
Oncocnemis dunbari [Noctuidae]
Wingspan 3.4 cm. Forewing is mottled gray with large round discal spots; hindwing is white with a gray submarginal border. This noctuid is common in wet coastal forests west of the Cascade Mountains. Moths fly in late summer and fall. Caterpillars feed on the foliage of oceanspray (Holodiscus discolor).
Similar species: Oncocnemis chandleri forewing is streaked with black, discal spots elongate and fused together, hindwing white with a broad black submarginal border, widely distributed in dry forests; Oncocnemis chorda forewing is pale brown with a dark border and narrow black basal and postmedian lines, hindwing white with a broad black submarginal border; Oncocnemis extremis forewing with black bands and a white reniform spot and narrow black basal and postmedian lines, hindwing white with a broad black submarginal border; Oncocnemis columbia forewing is dark black-gray with narrow black basal and postmedian lines, hindwing white with a broad black submarginal border, caterpillars feed on ocean spray; Oncocnemis youngi forewing is light red-gray with narrow black basal and postmedian lines, hindwing white with a broad black submarginal border, caterpillars feed on ocean spray.
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