MORPHOLOGY
External characteristics
Male
Forewings: The forewing has a black coloured marginal border, with an clearly defined inner border (Yata and Morishita, 1979).
Female
The inner margin of the black border on the forewing is more zigzagged (Yata and Morishita, 1979).
Subspecies and variation
Three subspecies are described (Yata and Morishita, 1979). The female of ssp. samanga, which is also the largest subspecies, has a greenish lemon yellow colouration on the upper side wing surface. The male of ssp. auriflua is usually tinged with orange colouration on the upper side wing surface (Yata and Morishita, 1979).