In the footsteps of history: the bees of the genus Hylaeus Fabricius (Hymenoptera, Apoidea: Colletidae) collected by V. I. Roborovsky and P. K. Kozlov in Northwest China (1895 - 1926) Author Yu, Maхim Author Daтhe, Holger H. text Zootaxa 2018 2018-06-18 4434 3 573 588 journal article 29867 10.11646/zootaxa.4434.3.11 9821a4a5-b192-48ac-a98a-86241400cb02 1175-5326 1292263 096CAD80-4176-4C2E-AEEE-7D4B5B991479 Hylaeus ( Hylaeus ) potanini Morawitz, 1890 Hylaeus potanini Morawitz, 1890 : 378 –379, ♀, ♂ (lectotype: ♂, designated by Dathe 1986a : 280 , “Mongolia: Zagan-Burjuk” [North China], ZISP); Dathe 1986a : 283 (North China); Chen & Xu 2009 : 48 (China); Dathe & Proshchalykin 2016 : 371 (North China); 2017: 33 (Gansu). Material examined. CHINA . 1 ♀ , 1 ♂ , Dаnkhe River , S tо Sасhzhоu, Gаshunskоe Gоbi , 24-27.VII.1895 , V. Roborovsky , P. Kozlov ; 1 ♀, oasis Sachzhou, Gashunskoe Gobi, 30.VII.1895 ; 1 ♀, 1 ♂, idem, 1-3.VIII.1895 ; 1 ♀, 2 ♂, idem, 4.VIII.1895 , V. Roborovsky, P. Kozlov; 6 ♂, 3 ♂, Suleikhe, Sachzhou, Gashun' Gobi, 7.VIII.1895 , V. Roborovsky, P. Kozlov; 2 ♀, Czhargalante-Etsingol, Alashan', 18-19.VI.1909 , P. Kozlov. Distribution. Kаzаkhstаn , Mоngоliа , Chinа ( Gаnsu , * Inner Mоngоliа ).