Conservation Status
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Not of concern.
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Cyclicity
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Peak flight activity in Alberta is mid May through mid June.
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Distribution
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Coastal BC east to Newfoundland, and from Ft. Smith, NWT south to CA, SD and GA (McGuffin 1987, Wagner et al. 2001).
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General Description
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A mid-sized geometrid, ground colour tan heavily speckled with red-brown and a broad dark red-brown forewing median band with a straight AM border and an irregular PM border. Hindwing with dark PM line, heaviest at the anal margin. No other Alberta geometrid has a broad, evenly coloured median band like that of P. pulveraria.
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Habitat
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Deciduous and mixedwood forest and woodlands.
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Life Cycle
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Adults are active both during the day and at night, and come to lights. A fairly common moth in the central boreal region of the province. The larvae are twig mimics, and pupate prior to winter among leaves tied together with silk (McGuffin 1987).
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Trophic Strategy
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Larvae are generalists on deciduous and coniferous trees and shrubs, perhaps with a preference for the rose family; reported hosts include saskatoon (Amelanchier), choke cherry (Prunus), raspberry (Rubus), shrubby cinquefoil (Potentilla), paper birch (Betula), alder (Alnus), willows (Salix), white spruce (Picea) and Douglas-fir (Pseudotsuga).
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