This moth has a total length of .50 inch and about 1 inch wing span. The forewing is whitish with gray markings. There is a large gray patch near the inner margin, a gray subterminal patch and 3 gray terminal lines with the middle one dotted. The thorax has an erect tuft of blue-black scales. The hindwings are whitish with brown shading and a whitish fringe. The caterpillar is slender, greenish with pale crossbands at the segments. It has sparse light-colored hairs. The face is pinkish with black markings. The very similar Pale Gray Bird- Dropping moth is smaller, 3/8 inch, and the thoracic tuft is not as dark.