Family Histeridae

ABSTRACT The present contribution is a report of a new taxon of the Chlamydopsinae in Japan, consisting of Boreochlamydus ohtanii n. g. et n. sp., and two new taxa of the Aleocharinae from Nepal and Japan, which include Lomechusa throngensis n. sp., and Lomechusa hosodai n. sp. The Chlamydopsinae of Histeridae seem to be new to the coleopterous fauna in the Palaearctic region. A brief concept of the genera Lomechusa and Atemeles is also given. KEY WORDS Taxonomy/Chlamydopsinae/1.omechusa/Nepal/Japan Myrmecophilous or termitophilous beetles are of particular interest not only in their habitats, but also in the host-parasite interactions directly affecting their own, as well as host phylogenies and their coevolution. In my short experience in the field, the chance to find out these beetles in ant's nest is rare in such a temperate zone as Japan. Fortunatejy, I have examined a series of examples of the myrmecophilous beetle species through the courtesy of my colleagues. It is noteworthy that the presence of the species of the subfam. Chlamydopsinae might be their first report for the Palaearctic region, and that the Nepalese Lomechusa throngensis n. sp. found at an altitude of 4,400 m would be the highest occurrence record known to the genus. The type specimens of the species are deposited in the collection of T. Shibata unless otherwise noted and in the collection of the author (KS)