Revision of the New Zealand genus Adalmus with description of six new species (Coleoptera: Staphylinidae: Pselaphinae)

Abstract: The monotypic pselaphine New Zealand genus Adalmus Reitter, 1882 (Euplectitae: Trichonychini: Panaphantina) is revised to include eight species. Six new species are described: Adalmus bullerensis sp. nov., A. kanierensis sp. nov., A. karekarensis sp. nov., A. mangamukaensis sp. nov., A. puberilumbus sp. nov., and A. serrilumbus sp. nov. In addition, the genus Dalmisus Sharp, 1886 is placed as a junior subjective synonym of Adalmus and the species Dalmisus batrisodes Sharp, 1886, Plectomorphus longiceps Broun, 1913 and Plectomorphus longipes Broun, 1912 are considered junior subjective synonyms of A. velutinus Reitter, 1885. Adalmus rugiceps (Broun, 1921) comb. nov. is transferred from the genus Plectomorphus Raffray, 1898. Lectotypes are designated for Adalmus velutinus Reitter, 1885 and Dalmisus batrisodes Sharp, 1886. An identification key, descriptions, habitus illustrations, diagnostic characters, a checklist, and distribution maps of Adalmus species are provided.

Key words: Coleoptera, Staphylinidae, Pselaphinae, Trichonychini, Panaphantina, ant-loving beetles, new combination, new species, new synonymy, lectotype designation, taxonomy, New Zealand