Eight new species and additional records of the Pselaphodes complex from Laos and Vietnam, with a key to known species (Coleoptera: Staphylinidae: Pselaphinae) Yin, Zi-Wei Li, Ning Acta Entomologica Musei Nationalis Pragae 2021 Acta. Ent. Mus. Natl. Pragae 2021-02-18 61 1 35 53 8Y8PZ Yin & Li, 2021 Yin & Li 2021 [298,521,510,533] Insecta Staphylinidae Pselaphodes Animalia Coleoptera 9 44 Arthropoda species jendeki sp. nov.  ( Figs 7A, 8)    Typematerial( 8 specimens).  HOLOTYPE:  VIETNAM: LÀO CAI: ♂, ‘VIETNAM N 22°20′N, 103°50′E, SAPA( Lao Cai) 25.5- 10.6.1991, leg. E. Jendek’( MHNG).  PARATYPES:  VIETNAM: LÀO CAI: 7 ♂♂, same label data as for holotype( MHNG, SNUC).   Diagnosis.Male length 3.80–3.85 mm. antennomeres 9–11 each elongate, almost simple, antennomere 9 with small disc-like process near apex. Protrochanter with acute ventral spine, profemur with sharp spine at middle; mesotrochanter with acute ventral spine, mesotibia with small, blunt apical tubercle. Horn-like metaventral processes considerably short, apices truncate and bent downwards. Median lobe of aedeagus asymmetric; parameres short; endophallus composed of three sclerites. Female unknow.   Description. Male( Fig. 7A). Body length 3.80–3.85 mm. Head slightly longer than wide, HL 0.68–0.73 mm, HW 0.68–0.70 mm; eyes prominent, each composed of about 40 facets. Antennomeres 2–8 each moniliform, antennomeres 9–11 ( Fig. 8A) each strongly elongate and enlarged, antennomere 9 with small disc-like structure near apex. Pronotum ( Fig. 8B) approximately as long as wide, PL 0.65–0.68 mm, PW 0.62–0.67 mm, sides narrowing anteriorly at apical two-fifths. Elytra broader than long, EL 1.10–1.20 mm, EW 1.30–1.40 mm. Horn-like metaventral processes ( Fig. 8C) short and broad in lateral view, apically bifid, upper apex acute, apex truncate.Protrochanter ( Fig. 8D) with thin, acute ventral spine; profemur with sharp ventral spine at middle; mesotrochanter ( Fig. 8E) with acute ventral spine, mesofemur simple, mesotibia ( Fig. 8F) with small apical tubercle; metatrochanters and metafemur ( Fig. 8G) simple. Abdomen broad at base and narrowed apically, AL 1.15–1.20 mm, AW 1.30 mm. Sternite 7 (IX) ( Fig. 8H) hemi-membranous. Aedeagus ( Figs 8I–E) 0.75 mmlong, median lobe asymmetric dorso-ventrally, narrowing apically and curved rightwards at apex in dorsal view; parameres much shorter than median lobe, each with three apical setae, endophallus composed of one triangle and two slightly curved, elongate sclerites.  Fig. 7. Dorsal habitus of  Pselaphodesmales. A –  P. jendeki sp. nov.; B –  P. nongfa sp. nov.Scale bars: 1 mm.  Female.Unknown.   Comparative notes.This species belongs to the  P. tianmuensisspecies group whose males share almost simple antennal clubs except for antennomere 9 which has a disc-like process near the apex. The new species may be readily separated from allied species by short and truncate horn-like metaventral processes, unique configuration of the aedeagus, as well as by its distribution.   Etymology.The new species is named after the Slovak entomologist Eduard Jendek, collector of the holotype.   Distribution.Vietnam: Lào Cai. 3898373307 1991-10-06 MHNG E. Jendek' Vietnam 22.333334 Lao Cai 1260 103.833336 SAPA 9 44 1 1 holotype 3898371321 MHNG, SNUC Vietnam L AO CAI 9 44 7 7 paratype