[1] The larvae feed on Vepris and possibly Citrus species.

The blue band does not reach the hind wing margin in area 1b.Seitz-Only differs from Papilio charopus in that the median band of the upper surface is only a little widened posteriorly, so that the spots of cellules 2 and 8 of the hindwing cover but a third or a quarter of the cellules and are scarcely twice as long as broad; the submarginal spots of the hindwing beneath in the male yellow, very prominent, in the female as in charopus.

[5] Papilio hornimani belongs to a clade called the nireus species group with 15 members.

The pattern is black with green bands and spots and the butterflies, although called swallowtails, lack tails with the exception of this species and Papilio charopus.

The clade members are: They are named for Frederick John Horniman.