The subgenus was revised in 1982 by Robert Leslie Smiles based on morphological characters.

[3] However the genus Charaxes comprises many morphologically very different groups such as the subgenera Euxanthe and Polyura.

A phylogenomic study is ongoing to resolve the phylogenetic placements of these different groups.

[3] A comprehensive molecular phylogeny of the subgenus as well as several taxonomic studies have allowed a complete revision of the group.

[4][5][6] A follow-up study investigating the biogeographical history of the subgenus suggested an origin in the Miocene about 12 million years ago in mainland Asia.