Georissidae (Coleoptera: Hydrophiloidea) – a new beetle family for the fauna of Mongolia Sazhnev, A. S. Prokin, A. A. Far Eastern Entomologist 2017 2017-11-29 347 22 24 3FRYZ (P. Rossi, 1794) P. Rossi 1794 [227,719,405,427] Insecta Georissidae Georissus Animalia Coleoptera 1 23 Arthropoda species crenulatus Georissus   Fig. 1  MATERIAL EXAMINED.  Mongolia:Dzabkhan Aymag, vicinities of Dörvöljin sum,  coast of Dzabkhan River, 47°37′28.43″N, 95°00′36.84″E,  28.VIII 2017, 20 ex.(coll. A.S. Sazhnev & A.A. Prokin).  NOTES. All specimens were collected at a distance of 2–5 meters from water edge line ( Fig. 2) on sandy-gravel substrate on the shore of Dzabkhan River (at elevations up to 1 400 m a.s.l.) together with Saldidae, Carabidae(  Bembidion,  Dyschiriodes) and Heteroceridae ( Augyles). All beetles were covered by drift.  DISTRIBUTION. Mongolia(new record). – Europe from Norwayto Caucasus, Trans- caucasia, Israel, Kazakhstan, Russia(West and East Siberia, Russian Far East) (Litovkin & Sazhnev, 2012; Fikáček & Przewoźny, 2015).  Fig. 1. Habitus of  Georissus crenulatus, Dörvöljin, Mongolia. 1 – normal specimen,  ♂; 2 – immature specimen, ♀; 3 – aedeagus, dorsal view. [227,1127,514,538] 2017-08-28 A.S. Sazhnev 47.62456 Dzabkhan River 1 95.01023 1 23 20