Charaxes mars, the iron rajah, is a butterfly of the rajahs and nawabs group, i.e. the Charaxinae group of the brush-footed butterflies family. It is endemic to Sulawesi in central Indonesia.[1] Charaxes mars is a large butterfly with forewings with concave outer edge and hindwings each with a tail. The upper side of the forewings is dark blue and light in the basal part. The hindwings are orange with a submarginal line of dark brown ocelli.
male Tawny colour of upperside of hindwing not reaching in front of R1; blackpostdisco-submarginal patches all fused together (except dots M2S-M2), patchM1-M2 elongate, vein R3 and outer half of M1 black, tawny admarginal interspacesSC2- R2 faintly indicated; tail shorter than in mars dohertyifemale Unknown.madensis male Unknown. Most likely resembling that of Ch. mars.
female. Allied to Ch.mars. Upperside Forewing: blackish brown, no blue tone, white discal band broader than Ch. mars.[2]