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A medium-size (3.3-4.5 cm wingspan) pale grey moth. The long silky hair on the body is typical of the genus. The forewings are pale pearl grey shading to white at the wing-base. The normal lines are reduced to a few dark marks, in particular at the costa, and a series of black dots on the outer margin in the spaces between the veins. There are also a few small patches of gold or orange scales along the lower forewing margin. The hindwings are white with a row of prominent back spots between the veins along the margin, and a small dark discal spot. All other Furcula species have a sharply contrasting dark median band crossing the forewings. The nominate subspecies been reported from the Llyodminster region. Subspecies wileyi occurs in the grasslands region of southern Alberta; it is larger and paler than ssp. cinerea.