A taxonomic revision of the divina species-group of the genus Nemophora Hoffmannsegg (Lepidoptera, Adelidae)

The Nemophora divina group comprises three externally similar species of brown to ochreous brown coloration characterized by W-shaped light mark at the forewing base, the apical one-third of the aedeagus formed by the left wall only which forms a broad lobe, and the anellus with a pair of well-sclerotized articulated carinae at the base of the juxta. Three species, all distributed in South-Eastern Asia, are: recognized: N. divina (Caradja) comb. n. from continental China, N. assamensis sp. n. from India, and N. magnifica sp. n. from Taiwan. Data on the primary type of N. divina is provided; the monophyly of the species-group is demonstrated and the tentative relationships of its species are discussed. A hp to species based on external characters and male genitalia is provided; adults and male genitalia are described and illustrated.