Comprehensive DescriptionRead full entry
General DescriptionA rather large (2.5-3.3 cm wingspan) diurnal long-winged wasp-like moth. The head and body is brown-black, with paler yellow or whitish markings on the lateral side of the segments giving it a somewhat banded appearance. The legs are long and mostly orange, with narrow dark bands at the joints. The forewings are opaque, olive brown with rusty orange powdering on the veins, in particular near the base. The basal half of the forewings are very narrow and mostly without scales. Hindwings hyaline (unscaled) except for the veins, which are dark brown and rusty-red, and a narrow rusty-orange terminal line and olive-brown fringe. Sexes similar. The large size and opaque forewings will separate the ash borer from other Alberta clearwing moths.