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 ) pesenkoi Proshchalykin & Dathe, 2016 Hylaeus pesenkoi Proshchalykin & Dathe, 2016 : 310 –313, , ( holotype : , Russia : Tyva Republic , 60 km W Mugur-Aksy , 2270 m , 6.VIII.1987 , leg. Yu. Pesenko , ZISP ) . Material examined. CHINA . 5 ♀ , 1 ♂ , Khаtu gоrge, N Burkhаn Buddа , 10800 ft . [ 3290 m ], end. VII.1901 , Р. Kоzlоv. Distribution. Russiа (Sоuth Siberiа), Mоngоliа , * Chinа ( Qinghаi ).