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 ( Prosopis ) confusus Nylander, 1852 Hylaeus confusus Nylander, 1852 : 232 , ♀, ♂ (syntypes: ♀♀, ♂♂, Europe, ZMHF); Hua 2006: 295 (Xinjiang); Chen & Xu 2009 : 49 (Xinjiang); Dathe & Proshchalykin 2016 : 375 (Xizang, Jilin); Proshchalykin & Dathe 2012 : 27 (Xizang, Jilin); 2016: 316 (Xizang, Jilin); Proshchalykin 2017b : 261 (NE, NW China). Prosopis sublaevis Schenck, 1853 : 215 , ♀ ( type locality: Czech Republic , SGNF ). Hylaeus xanthocnemis Förster, 1871 : 969 , ♀ ( type locality: Czech Republic ). Hylaeus nigriceps Förster, 1871 : 977 , ♀ ( type locality: Aachen , Germany ). Hylaeus similatus Förster, 1871 : 994 –995, ♂ ( type locality: Piesting , Austria ). Prosopis pallididens Dalla Torre, 1896 : 28 , nom. nov. for Hylaeus pallidens Curtis, 1831 . Hylaeus monticola Bridwell, 1919 : 155 , ♀ , ♂ ( type locality: Chuzenji , Tochigi Prefecture , Honshu , Japan ) ; Chen et al . 2010 : 119 ( Jilin ) . Hylaeus wilmattae Cockerell, 1924 : 280 –281, ♀ , ♂ ( type locality: Primorskiy Terr., Russia , BMNH ). Material examined. CHINA . 2 ♀ , Suleikhe River , neаr Sасhzhоu, Gаshunskоe Gоbi , 7.VIII.1895 , V. Rоbоrоvskу , Р. Kоzlоv. Distribution. Eurоpe, Armeniа , Azerbаijаn , Тurkeу, Kаzаkhstаn , Uzbekistаn , Russiа , Mоngоliа , Chinа (* Gаnsu , Jilin , Хinjiаng, Хizаng), Jаpаn ( Hоkаidо , Hоnshu).