On some Lomechusini of the Palaearctic and Oriental regions (Coleoptera: Staphylinidae: Aleocharinae) Author Assing, Volker text Beiträge Zur Entomologie = Contributions to Entomology 2016 2016-12-20 66 1 13 111 https://www.contributions-to-entomology.org/article/view/1904 journal article 2419 10.21248/contrib.entomol.66.1.13-111 d2933fad-1cac-4a5a-a558-2633f8314541 0005-805X 6421171 Tetrabothrus malaysianus PACE, 2013 Tetrabothrus malaysianus PACE, 2013: 50 f. Material examined : Malaysia : 1 ♂ , Borneo , Sabah , Danum Valley , 4°58'N , 117°47'E , flight interception trap , VI.1999 , leg. Mendel ( BMNH ) . Indonesia : 25 exs. , Borneo , Kalimantan Tengah , confluence of Busang and Rekut , 0°03'S , 113°59'E , flight interception trap , VIII.2001 , leg. Brendell ( BMNH , cAss) . Comment : The original description is based on a unique male from “ Malaysia , Hulu Perak , Bangunan, Camp c/o Kampung Semelor, E shore Lake Tasek-Temengor, 230 m ” ( PACE 2013 ). The aedeagus of the above material is in agreement with that illustrated by PACE (2013) . It somewhat resembles that of T. clavatus in lateral view, from which T. malaysianus is readily distinguished by much darker coloration of the body, the coloration of the legs (yellowish with infuscate femoral apices), much darker antennae, a differently shaped pronotum, the presence of non-setiferous punctation in the anterior portion of tergite VII, the almost acutely pointed posterior margin of the male sternite VIII, and by the shape of the median lobe of aedeagus (particularly in ventral view). The above material represents the first records since the original description, the first records from Borneo, and (specimens from Kalimantan Tengah ) the first record from Indonesia .