Potanthus omaha male.
Smaller species; FW with spots 4 & 5 overlapping at least the spot below them( spot 3).
HW with uppermost spot (combined spot 4 + 5) barely projected outwards.
Underside lightly shaded.
Abdominal end yellow.
http://a4.pbase.com/g4/25/686825/2/1...1.Buz1tBHC.jpg

Potanthus trachala. mediumlarge .
FW with spot 4 & 5 not overlapping the spots above or below them ; they are connecte3d by the spikes.
FW spots with deely concave outer margins, & appearing spiky.
HW uppermost spot 4 + 5 projedted strongly outwards towards margin.
Heavier dark edgings.
Abdominal end with a strong black band.
http://4.bp.blogspot.com/-kvlAhJLLsd...la-tytleri.jpg

TL Seow: Cheers.