MORPHOLOGY
External characteristics
Male
Wingspan (mm): 80 - 85 (DBpedia, n.d.).
Forewings: The upper side wing surface is white with a grey-ish black distal area. There are five subapical spots on the upper side (Pequin, 2021). Hindwings The hindwing upper side has five well defined yellow submarginal spots (D'Abrera, 1982; Pequin, 2021), and some black marginal spots (Pequin, 2021). The hindwing is chrome-yellow coloured and has a black margnial border on vein Cu1, the edge is almost evenly curved and well-defined (Pequin, 2021).
Female
The females generally have a different underside wing surface than the males, by being darker with broader margins on both wings. In addition, the underside wing surface is charcoal-grey (D'Abrera, 1982). The upper side wing surface is greyish black, the underside is similar to that of a male. On the forewing, there is a series of seven indistinct whitish submarginal spots (Pequin, 2021).
Subspecies and variation
Four subspecies are described (Pequin, 2021). Specimen from ssp. prinsi differ from the nominate subspecies by having a broader grey-brown margin on the hindwing upper side, and there are six well defined yellow submarginal spots. Ssp. sulana have narrower grey-brown margin than ssp. kuhni, and has fewer yellow submarginal spots (D'Abrera, 1982).