Elachista agilis Braun 1921

Elachista agilis Braun (Fig. 93.)
1921. Elachista agilis Braun, Proc. Acad. Nat. Sci. Phila., lxxiii, 16. Type <5, Glacier National Park, Montana [A. F. B. Coll.].
Head dark leaden gray, shining; palpi dark brown, slightly paler above, grayish; antennae dark brown. Thorax dark leaden metallic. Fore wings dark
brown, with golden reflections, and metallic silvery or golden markings; at basal fourth on dorsum an oblique spot reaching the fold ; at middle of costa a transverse spot reaching nearly to fold, and beneath it a small roundish spot below fold; a spot at tornus and near apex a curved costal streak nearly enclosing the apex. Cilia brown, row of scales around apex defined against the cilia. Hind wings and cilia brownish gray. Legs dark brown, with the femora, apex and spurs of hind tibiae only, and tips of tarsi silvery. Abdomen dark brown, silvery beneath.
Alar expanse : 7 mm.
Male genitalia (fig. 93) : uncus divided, lobes approximate, with short stiff setae; gnathos two knobs, each broadly elliptical, spines long; costal area of harpe expanded, free process of harpe short and broad, sacculus process slightly enlarging toward apex ; anellus lobes broad, truncate, lateral margins thickened ; vinculum broad, anteriorly broadly rounded, not produced; aedeagus tapering, cornuti three equally spaced weak spines at tip of vesica.
Known only from the male type and male paratype [A. F. B. Coll.] ; Goat Mountain, Glacier National Park, Montana, altitude 5000 feet, July 18, 1920.
Food plant and early stages unknown.
Very distinct from all other American species, but approaching the European trapeziella Stainton. Venation typical of the section.

Elachista agilis is a moth of the family Elachistidae. It is found in Canada, where it has been recorded from Alberta and Montana.

The wingspan is about 7 mm. The forewings are dark brown, somewhat shining, with metallic silvery or golden markings. The hindwings are brownish grey.