Revision of the genus Atholus Thomson, 1859 (Coleoptera, Histeridae, Histerinae) from the Philippines with additional records

Abstract

The Philippine species of the genus Atholus Thomson, 1859 are revised and re-examined based on museum as well as freshly collected specimens. Atholus torquatus (Marseul, 1854) is re-described, and SEM micrographs and illustrations of both male and female genitalia are provided. Atholus bakeri (Bickhardt, 1914) and Atholus nitidissimus Desbordes, 1925 are also re-described based on images of syntypes. Atholus pirithous (Marseul, 1873) and A. torquatus (Marseul, 1854) are new to the Philippine archipelago. Atholus coelestis (Marseul, 1857) and A. philippinensis (Marseul, 1854) are provided with diagnostic descriptions and images. A key to the Philippine species is provided.