Arhopala atrax or not?

[DaveChiangMai]

Two images, same butterfly, taken at Wiang Kosai NP, n Thailand. The underwing pattern looks like A. atrax, which is a common forest Arhopala there, but the upperwing shows a very narrow black border, which should be much wider on A. atrax.

Thoughts appreciated on the identification please.

25051

25050

[atronox]

It's A. silhetensis silhetensis. The post-discal spots in spaces 2 and 3 on the hindwing distinguish it from atrax. Also the submarginal markings on both wings

[DaveChiangMai]

Many thanks for the correction.