Definitely Epicoma sp. probably E. contristis although yellow dot in dark patch not prominent and the dark wing patch is more extensive than most E. constristis, perhaps E. tristis? Possibly a female although not showing much yellow on the the trailing edge of the hindwing as seems to characteristic of both these species.
Donovan's drawing of the underside of a female E. tristis clearly shows a pale line along costa of the forewing underside, which this specimen does not show, so I agree that this is a female E. contristis.