The strongly bowed FW & more uniformly dark underside & antennae suggest it is Baoris oceia.

http://www.besgroup.org/wp-content/u...d-dropping.jpg
http://www.butterflycircle.com/check...-Simon-Sng.jpg
http://4.bp.blogspot.com/-moNZL_baAc...wn+skipper.jpg



TL Seow: Cheers.