Thierry Bouyer has published a systematic revision of Charaxini. It can be found here.
The abstract:
The systematics of Charaxini is revised. The three historical genera are confirmed: Charaxes (Ochsenheimer, 1816); Polyura (Billberg, 1820) and Euxanthe (Hübner, 1819). The genera Eriboea (Hübner, 1819) status rev.; Zingha
(Hemming, 1939) status rev.; Viridixes (Bouyer & Vingerhoedt, 2008) status rev. and Euxanthe subgenus Hypomelaena (Aurivillius, 1898) status. rev. are reinstated. Three new genera are described: Laodice genus nov. with
the type species Papilio lycurgus (Fabricius, 1793); Setechin genus nov. with the type species Charaxes nichetes
(Grose-Smith, 1883) and Ydeali genus nov. with the type species Charaxes lydiae (Holland, 1917). A key to the nine
genera is provided.
