Abstract
ABSTRACTA new genus and species, Stylogymnusa subantarctica of Gymnusini (Staphylinidae Aleocharinae), is described from the Auckland Islands. The morphological peculiarities, including vestigial eyes and remarkable mouth‐parts, of the new species are discussed in relation to its possible habits. The phylogenetic relationships of the new genus are explored, leading to a discussion of the taxonomy and phylogeny of the Gymnusini and other groups of Aleocharinae. The tribes Gymnusini, to include Gymnusa and Stylogymnusa, and Deinopsini, to include Deinopsis and Adinopsis, are redefined, Adinopsini falling as a synonym of Deinopsini. Two species currently included in Deinopsis are transferred to other genera. The subfamily Aleocharinae is briefly characterised and considered to include several groups currently placed in other subfamilies.
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