Arhopala muta
Subspecies - A muta waterstradti
Photo taken at Danum Valley, Sabah on 23 July 2013. This may be the Bornean ssp. of Arhopala moorei, but the subspecies of the two species are, on Borneo, inseprable with underside shots only. However, A. muta has been found at Danum Valley before, whereas A. moorei has not.