About Agonopterix argillacea Walsingham, 1881
Agonopterix argillacea is a moth species belonging to the family Depressariidae. It was first described by Thomas de Grey in 1881. This moth is found in North America, where it has been recorded from California north to British Columbia, and also in Manitoba, Ontario, New Brunswick, Nova Scotia, Michigan, South Dakota, Illinois, Texas, Florida, and Utah. The wingspan of adult Agonopterix argillacea ranges from 14 to 21 millimeters. The forewings are pale greyish-ochreous, densely speckled with blackish fuscous scales. A pale basal patch is spread along the costal margin, but is bounded below by a blackish fuscous shade that is diffuse outward and distinct inward. Two fuscous dots appear before the middle of the forewing, followed by a blackish fuscous cloud above the center of the wing that extends to a pale dirty-whitish dot located immediately beyond and below the cloud. The hindwings are pale greyish ochreous. The larvae of this species feed on the plants Salix lasiolepis, Salix bebbiana, Amorpha fruticosa, and Ptelea trifoliata.
