A medium-size (3.0-3.5 cm. wingspan) moth with pale grey (sometimes with a pinkbrown tint) forewings and dark hindwings. The forewing pattern is unusual and unmistakable. A wide, dirty white swath runs in an arc from the wing base along the leading edge to about mid-wing, with the area below this grey-brown. The outer half of the forewing has a series of narrow wavy bands of black, dark grey-brown, and brown shading into a broad subterminal pale grey band and a narrow blackish terminal band followed by fine pale and dark grey bands. Hindwings are dark smoky brown, faintly banded and slightly darkening toward the outer margin. The antennae are simple, and both the sexes are similar.