Pantoporia sandaka sandaka.
FW with the orange band intact & prominent.
The grey band is is much reduced, broken or beaded in the male.
Male with a large foot to the postdiscal spot.
Female is rather variable.
FW submarginal band usually expanded at the apex.
Grey band may be broken, but can be prominent.

Typical males.
P.Malaysia.
http://2.bp.blogspot.com/-c8rXTibfeq...0/DSC_0137.JPG
Singapore.
https://2.bp.blogspot.com/-uNRH3neo0...ascar-Fed3.jpg
https://farm2.staticflickr.com/1187/...dbdb16cd75.jpg
https://inaturalist-open-data.s3.ama...2610/large.jpg


Females.
With the grey band broken or narrow as in the male.
http://www.butterflycircle.com/check...erick%20Ho.jpg
https://encrypted-tbn0.gstatic.com/i...wsiRg&usqp=CAU

More often the grey band is wider, causing a lot of confusion with P. hordonia.
http://3.bp.blogspot.com/_0EK80AsaR7...Lascar@MNT.jpg
https://static.inaturalist.org/photo...278/large.jpeg
Female specimen(Singapore) in Natural History Museum Uk.
https://encrypted-tbn0.gstatic.com/i...fMpoo&usqp=CAU

Female (P. Malaysia) from C&P4.
SNIP6.PNG