the length of the forewings is 17.5–24 mm for males and 21.5–24 mm for females. in the nominate subspecies and "o. h. inangulata", the wings range from uniform reddish brown with little trace of the medial shade, brown with a darker brown medial shade, varying shades of brown with the distal half of the hindwings bright yellow, or intermediate between these three. in "o. h. tienia", neither uniformly reddish brown nor yellow and brown specimens have been seen.