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 Subgenus Dentigera Popov, 1939 Prosopis ( Dentigera ) Popov, 1939 : 168 . Type species: Hylaeus brevicornis Nylander, 1852 , by original designation.