The Korean species of genus Nephopterix Hübner, 1825 is revised. Seven species of genus Korea are treated. Among them, one species, Nephopterix paraexotica is described as new to science and two species, N. fumella (Eversmann) and N. tomisawai Yamanaka, are recorded for the first time from Korea. Adults, wing venations, and genitalia of both sexes are illustrated. Collecting data and biological informations for the species are also given. Keys to all known species of the genus based on external and genitalic characters are provided.