Macromoths of Northwest Forests and Woodlands

Spaelotis bicava [Noctuidae]

Wingspan 3.7 cm. Forewing is gray with the small orbicular spot elongate and outlined in black. This noctuid is abundant and widely distributed in dry forests of western North America. Moths fly in midsummer. Caterpillar host plants are shrubs such as sage (Artemisia).

Similar species: Spaelotis clandestina forewing is dark gray-black, common in the Rocky Mountain region; Graphiphora augur (Noctuidae) forewing with the reniform and orbicular spots outlined in black, widely distributed in wet conifer forests, caterpillars feed on flowering trees and shrubs such as willow (Salix); Rhyacia clemens (Noctuidae) forewing with a black area between the discal spots, distinct basal and postmedian lines, widely distributed in dry forests.

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