Adult: Distinguished from all other species of the proteus-group by yellow-and-black pattern, which forms bands across the head and not more than a single yellow patch on each fore wing (see figure below). Dark specimens of this species resemble males of
Clastoptera testacea from above, but differ in their facial markings, which include a black band across the upper part of the face in
C. proteus, but not in
testacea.
(1)