Synonyms and other taxonomic changes
Pseudosciaphila duplex (Walsingham, 1895)
Walsingham, 1895 (1)
Argyroploce thallasana McDunnough, 1922
Phylogenetic sequence #620538
Explanation of Names
Specific epithet is Latin meaning "twofold, double" but it's unclear from the description what it refers to. (1)
Wingspan 18-27 mm. (2)
Forewing length 10-13 mm. (3)
Adult - forewing of typical form resembles a bird dropping -- dark gray in basal, medial, and terminal areas, and whitish in antemedial (AM) and postmedial (PM) areas; dark medial patch is widest at inner margin, tapering with irregular edges to a blunt point at costa; short black marks along distal half of costa; small black patch at apex; some individuals have a mostly dark brown forewing, and others have a mostly light brown forewing; hindwing in all forms dark gray with pale fringe. (3)
Northern United States and southern Canada: Quebec and New England to northern California and British Columbia.
Type locality: Loveland, Colorado.
Larvae feed on leaves of quaking aspen
), rarely birch, plum or willow. (4)
) forewing has less white/more gray, a more extensive medial patch, and a slightly different pattern of markings.
Walsingham, Lord. 1895. XXI. New Species of North American Tortricidae. Transactions of the Entomological Society of London
, 1895: 501
, f.4. (1)