Contribution to the knowledge of the tribe Mastigerina (Coleoptera: Staphylinidae: Pselaphinae, Clavigeritae), with a description of a new genus from Borneo Author Hlaváč, Peter text Zootaxa 2011 3070 51 59 journal article 46086 10.5281/zenodo.279027 a00aea11-9042-499a-856e-99a3c89f31db 1175-5326 279027 Key to species of Pseudacerus 1 Posterior angle of elytra protuberant. Elytra and pronotum with long setae throughout, setae on elytra more than twice as long as diameter of large punctures of isodiametric structures. Trichomes on first visible paratergites large, longer than maximum width of paratergites. Three long and narrow macrosetae-like trichomes slightly curved, not tangled. Body length 1.4–1.5 mm ..................................................................................... P. sabahensis sp. n. - Posterior angle of elytra simply carinate, not protuberant. Elytra and pronotum with long setae only in lateral half, elsewhere setae shorter, at most 1.5 times as long as diameter of large punctures of isodiametric structures. Trichomes on paratergites small, not longer than maximum width of paratergites. Two long and narrow, macrosetae-like trichomes tangled. Body length 1.35 mm ............................................................................... P. furcatus Raffray