Charaxes cowani is a butterfly in the family Nymphalidae. It is found in eastern Madagascar.[1] The habitat consists of montane forests at altitudes above 1,000 meters.
A full description is given by Walter Rothschild and Karl Jordan, 1900 Novitates Zoologicae volume 7:287-524. https://www.biodiversitylibrary.org/page/3267025/#page/295/mode/1up page 370 (for terms see Novitates Zoologicae volume 5:545-601 https://www.biodiversitylibrary.org/item/22556#page/9/mode/1up)
Charaxes candiope group. The group members are:
Named for Rev William Deans Cowan, missionary author of Geographical Excursions in South Central Madagascar. Royal Geographical Society, London, 1882.