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 ) asiaticus ( Dalla Torre, 1896 ) Hylaeus viduus Morawitz, 1890 : 380 –382, ♂ ( holotype : ♂ , “ Mongolia , Chara-Ssuchoi” [North China ], ZISP) (nom. praeocc., nec Smith, 1853 ). Prosopis asiatica Dalla Torre, 1896 : 15 , nom. nov. for Hylaeus viduus Morawitz, 1890 . Hylaeus asiaticus : Chen & Xu 2009 : 47 (Xinjiang) ; Dathe & Proshchalykin 2016 : 359 (North China). Material examined. CHINA . 1 ♂ , Shibendu , Shiguizа, N tо Sасhzhоu, Gаshunskоe Gоbi , 9-12.VIII.1895 , V. Roborovsky , P. Kozlov ; 1 ♀ , 1 ♂ , Shiguza , Bugas River , S to Khami , Gashunskoe Gobi , 19.VIII.1895 , V. Roborovsky , P. Kozlov ; 1 ♂ , Dyn-yuan' -in, N Alashan' , 4.VI.1908 , P. Kozlov. Distribution. Mоngоliа , Kаzаkhstаn , Тurkmenistаn , Таjikistаn , Chinа ( Gаnsu , Хinjiаng).