Taxonomic review of the Themus (Telephorops) nepalensis species-group (Coleoptera, Cantharidae)

: The diagnosis of the Themus (Telephorops) nepalensis species-group is summarized. A catalogue, a key and a distribution map of all world species are provided. Two synonymies are proposed: Themus (Telephorops) subcaeruleiformis Wittmer, 1983, syn. nov. = T. (Telephorops) crassimargo Champion, 1926; T. (Telephorops) separandus Wittmer, 1975, syn. nov. = T. (Telephorops) laboissierei (Pic, 1929). The female internal genitalia are photographed and described in this species-group for the first time, the aedeagi of T. (Telephorops) crassipes Pic, 1929 and T. (Telephorops) impressipennis (Fairmaire, 1886) are illustrated and described for the first time, and some additional distribution information is provided for the species. Themus (Telephorops) cavipennis (Fairmaire, 1897) is a new record for the Chinese fauna.