the length of the forewings is 8.2-9.2 mm. the ground color of the forewings is dark brown, longitudinally streaked with blackish and ochreous, varying in density and ill-defined except on the veins in the terminal area. the ground color of the hindwings is pale gray-brown, but slightly darker toward the apex. adults are on wing in june (in british columbia) and from august to early september (in california).