Pierid species of the Aporia agathon group are among the largest Sino-Himalayan members of genus Aporia, with four conventionally recognised species, namely A. agathon, A. largeteaui, A. gigantea, and A. lemoulti. Recent publications indicated that some of these species may contain more than one species despite their similar morphological characters. The present research analysed this group of butterflies using mitogenomic data, and proved that A. japfuensisstat. nov., A. bifurcatastat. nov., A. moltrechtireinst. stat., A. kuangtungensisstat. nov. and A. omotoistat. nov. should be recognised as distinct species, while lemoultistat. rev., giganteastat. nov. and fanjinensisstat. rev. should be subspecies of A. largeteaui. Two new subspecies, namely A. kuangtungensis yufeiissp. nov. and A. kuangtungensis josephissp. nov. were described. Illustrations of specimens and male and female genitalia of each taxon were provided in this article with an updated classification system. Variable melanism and yellow tinge are two major factors causing historical taxonomic confusion; thus, such characters should be less crucial for this species group. Future research is still necessary to elucidate the evolutionary history of these species along with other Aporia taxa, as well as the mechanism of variable melanism and yellow coloration.
Keywords: Hengduan Mountains; Sino-Himalayan species; black-vein pierids; female genitalia; male genitalia; new subspecies; phylogenetic reconstruction; type specimens.