Scopula siccata McDunnough 1939

A western species, found from northern Colorado north across Wyoming, western Montana and Idaho to the southern BC and extreme southwest Alberta. In Alberta it has been collected only in the area south of Crowsnest Pass, at Beaver Mines Lake.

A small (2.3-2.4cm wingspan) broad-winged grey-brown moth. A continuous contrasting narrow dark median band and a narrower post-median line cross both sets of wings. The area beyond the postmedian line on the forewings is suffused with dark scales, in particular the upper two-thirds. The discal marks on all four wings are small or almost obsolete. Very similar to S. frigidaria except for the dark suffusion on the outer part of the forewings, which is diagnostic for siccata.

Adults have been collected in the dry eastern slopes in the mountains south of the Crowsnest Pass.

Almost nothing is known

Scopula siccata is a moth of the family Geometridae first described by James Halliday McDunnough in 1939. It is found in North America from northern Colorado north through Wyoming, western Montana and Idaho to southern British Columbia and south-western Alberta. The habitat consists of dry slopes in mountainous areas.

The wingspan is 23–24 mm. Adults are grey brown with a contrasting narrow dark median band and a narrower post-median line across both wings.