Comprehensive Description

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General Description

"Wingspan 10-14 mm. Palpi, face, and head yellowish-white; frons pale brassy; antennae annulated with dark brown and pale ochreous, scrape ochreous; labial palpus ochreous, sometimes brownish. Thorax yellowish-white, sometimes deep purplish-brown anteriorly; tegula deep purplish brown. Forewings dark purplish-brown with dorsal part to tornus white; on the middle of the dorsal edge is an outwardly oblique blackish-brown streak, which lose itself in the dark costal part. Costal edge is strigulated with yellowish white, and shortly before apex is a larger white costal dash. Apical cilia blackish brown; dorsal cilia ochreous fuscous. Hindwing grayish fuscous. Legs brownish ochreous, foreleg deep brown above. Abdomen grayish fuscous" (Busck 1907: 17-18; Emmet et al 1996: 84-85). Forbes (1923: 347) mentions, "A. belangerella, a closely related taxon, might be only a variety of this species".  This species can be distinguished by the complete absence of golden color on wings, and its special status as a pest of apple and mountain ash, a feature not shared by other Argyresthia in Alberta. 

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© University of Alberta Museums

Source: University of Alberta Museums

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