MORPHOLOGY

External characteristics

Male
Forewing length (mm): 52-55. Wingspan (mm): 76-88.
Forewings: Upperside without or with faint pale stripes on both sides of veins in apical half; underside xxxxx?? Hindwings Hindwing outer margin slightly crenulate, large anal fold that varies from grayish black to beige or whitish; upperside black; underside xxxxx?

Female

Subspecies and variation

Varies geographically in size, intensity and extent of pale markings; nine subspecies have been distinguished.

Similar species

Not easily confused with other species.

_{source: Jan Moonen, peronal communication 2020}