On the upperside in the male two points of difference are—the short oblique portion of the postdiscal band on the forewing near the costal margin is narrower than in C. marmax, and the broad black terminal band on forewing which in C. marmax terminates at vein 1, in kahruba extends to the dorsal margin.
On the upperside in males, two differences are present—the short oblique part of the postdiscal band on the forewing near the costal margin is narrower than in C. marmax, and the broad black terminal band on the forewing that in C. marmax ends at vein 1 extends to the dorsal margin in kahruba.