A taxonomic revision of the hoeneella species-group of the genus Nemophora Hoffmannsegg (Lepidoptera: Adelidae)

A group of very similar greyish to ochreous brown species of Nemophora Hoffmannsegg with raised scales on frons, narrow pale forewing fascia and epiphysis absent, is revised. Four species of this group, all distributed in South-Eastern Asia, are recognized: N. aritai sp. n. from Taiwan, N. marisella sp. n. from Amami Is., Japan, N. hoeneella (Caradja & Meyrick) comb. n. from continental China, and N. issikii sp. n. from Taiwan. The type series of N. hoeneella is discussed. The monophyly of the species-group is demonstrated and the tentative relationships of its species are discussed. A key to species based on external characters and male genitalia is provided; adults and male genitalia are described and illustrated.