Three Cyamophila species are recognized from Korea, including a new species: Cyamophila hexastigma (Horváth, 1899), Cyamophila willieti (Wu, 1932), Cyamophila sp. nov. The new species differs from other allied species in the paramere bearing a characteristic innerly protruding apex. Cyamophila dalbergiae Li, 2011, in particular, it differs also in the wing venation with the vertically narrow rectangular cell cu1 and long and sinuous vein Rs whereas in Cyamophila dalbergiae cell cu1 is broad and vein Rs relatively short and straight. In Cyamophila sp. nov. the female circumanal ring is longer than in Cyamophila dalbergiae. All three species are described and illustrated, with a key to the Korean species.