S. lilaea is a continental species . It occurs largely in the hills in Peninsular Malaysia.
S. hippoclus is a Sundanian species ranging from Sundaland to PNG.
C7P4 states of the FW discal spot in space 3 being largely pink in S. hippoclus & orange in S. lilaea
The discal spot 3 is not the rounded pale spot but the triangular one next to it.
In good shot this can be seen to be paler. Similarly the HW discal spot 6 is paler.
On the HW the discal spot 7 which is quadrate in shape have a more obvious smudged spot on its upper outer margin.
The HW sub-basal dark fascia have a large tongue-shaped protrusion.
On the upperside. the cell band is less fractured, the subapical band more united, & the postdiscal have a distinct tail extending basad on the lower margin.
Thanks, Dr Seow! Valuable information! I'll also post the caterpillar from which those adult specimen photos came. For reference and record. It was bred on Australian Mulberry (Pipturus argentus), a host plant that has not been recorded, although it also belongs to the Urticaceae family.
It is nothing like S. hippoclus in the Papuan region.
There the male have rather narrow markings & the female broad ones.
Biak, West Irian fig 3, & 4, male & female. https://archive.org/details/transact...p?view=theater