The yellowtip antenna were also noted & stated in the past but back then there were no supporting males which show these.
The males below from Sarawak are clear enough to show the yellow tip.
Since it is quite different in this respect from L. cyanipardus in Thailand & India , the revised name seem appropriate.
Lexias bangkana.
Antennae with apical 2/3 of the club yellow.
Male with large apical white spot; FW marginal band mostly as a series of lunules.
Female with most spots bluish white. HW postdiscal spots mostly greenish-blue; FW larger apical spot oblong (vs rounded in pardalis/dirtea); FW 3rd apical spot faded . ( not so in dirtea & pardalis.)