This is a strange one as the markings are rather faint.

IT may suggest a Taractrocera but Taractrocera have rounded antennal clubs.& the UnH patterns do not match.
T. ardonia & archias.
http://4.bp.blogspot.com/-da67BS6JBh...0/DSC_0183.JPG
http://www.butterflycircle.com/check...20-%20Khew.jpg

The FW spot 4 & 5 are equal in size & the abdominal end is yellow.
These indicate it is either P. omaha or ganda.

It has to be a P. omaha male (note brushlike abdominal end)
P. omaha is rather dull ochreous while P. ganda is strongly orange.
Even if the black is reduced (suggesting dry-season influence) the basal orange do not change.
P. omaha & P ganda male.
http://www.butterflycircle.com/check...obby%20Mun.jpg
http://4.bp.blogspot.com/-L3ew9ztkIk...thus-ganda.jpg

Other species are ruled out by combination of abdiminal end black-banded or not & FW spot 4 & 5 of different sizes.

TL Seow: Cheers.