Although going by the key this comes out as Arhopala lurida, mainly because of the position of HW spot 7, a number of features suggest this may be merely a variant of Arhopala pseudomuta.
These features are.
1. It is a common feature in pseudomuta for the FW spot 4 to be strongly dislocated out.
This much less in lurida.
2. UnH spot 6 is rounded in pseudomuta but more angular in lurida.
3. The green metalmark in pseudomuta is less sharp & flanked by a fuzzy strip.
It is well-defined in lurida.