The genus Hylaeus Fabricius in Mongolia, an updated species inventory (Hymenoptera: Apoidea, Colletidae) Author Dathe, Holger H. Author Proshchalykin, Maxim Yu. text Zootaxa 2016 4121 4 351 382 journal article 38899 10.11646/zootaxa.4121.4.1 93e5e29b-304d-456a-9a28-375659bca75b 1175-5326 256897 F246450E-C620-45A1-A2A0-941299711541 Hylaeus ( Hylaeus ) tsingtauensis ( Strand, 1915 ) Prosopis tsingtauensis Strand, 1915 : 62 –63, 1 ♀ (holotype—♀, China , Tsingtau [Dsingdao, Shandong Province], SDEI). Hylaeus pallescens Cockerell, 1924a : 279 –280, ♀ (holotype—♀, “Okeanskaja, Siberia” [Vladivostok, Primorskiy Terr., Russia ], VIII.1923 , leg. T. Cockerell, USNM). Synonymised by Ikudome 2013 : 4 ; Proshchalykin & Dathe 2012 : 16 ; Proshchalykin 2014 : 484 ; 2015: 7. Hylaeus stentoriscapus Dathe, 1986a : 271 –273, ♀, Ƌ (holotype—Ƌ, “Uvs: Charchiraa uul, Ulaangom Umgebung [ Mongolia , Uvs Aimag], 29.VII.1977 ”, ZNSH). Synonymized by Proshchalykin & Dathe 2012 : 16 . Hylaeus tsingtauensis : Proshchalykin & Dathe 2016 : 315 . Material examined. Mongolia . Uvs Aimag : 2 ♂, Tarialan sum, 8, 24.VII.1988 , MD, K. Seidelmann ( SDEI ); 8 ♀, 26 ♂, Tarialan, Kharkhiraa, 1, 25.VII.1989 , K. Seidelmann ( SDEI ); Selenge Aimag : 1 ♂, Ero-Gol near Dulan- Khan, 4.VIII.1975 , ES ( ZISP ); Tuv Aimag : 1 ♂, Ulaanbaatar, 26–30.VI.1994 , JC ( SDEI ); 1 ♂, Ulaanbaatar, Tuulgol floodplain, 3.VIII.1986 , MD ( SDEI ). Distribution in Mongolia . Uvs Aimag, Selenge Aimag, *Tuv Aimag ( Fig. 4 d). General distribution. Mongolia , Asian part of Russia .