Identification: There are two forms - light and dark (perhaps corresponding to the two subspecies?) - forewing of light form mostly whitish with contrasting black markings; forewing of dark form mostly brownish-gray with slightly darker median area; in both forms, AM, PM, and subterminal lines jagged; reniform and orbicular spots large, filled with ground color; thin dark bar usually connects AM line to PM line near inner margin; hindwing brownish-gray with darker veins and diffuse discal spot; top of thorax colored similarly to forewing in both forms
Wing Span: about 4.0 cm
Flight: adults fly in fall
Caterpillar Hosts: leaves of flowering trees and shrubs, especially blueberry/huckleberry (Vaccinium spp.)
Habitat: wet western coniferous and mixed forests
Range: British Columbia and Alberta to California and Utah
Taxonomy Notes: None.
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