Japanese species of the genus Nymphicula are revised. Three new species, N. saigusai, albibasalis and minuta are described and a newly recorded species, junctalis (HAMPSON) is redescribed. N. saigusai has hitherto been known as blandialis WALKER in Japan. The immature stages of N. saigusai and junctalis are also described. The taxonomic status of Nymphicula is discussed.
