Twenty-three known species of the Colletes clypearis speices group from China are treated in this paper. C. cinerascens Morawitz 1893, C. clypearis Morawitz 1876, C. floralis Eversmann 1852, C. impunctatus Nylander 1852, Colletes paratibeticus Kuhlmann 2002 and Colletes sodalis (Cameron 1897) are newly recorded from China. C. harrerioides sp. n., C. heilongtenensis sp. n., C. hirsutus sp. n., C...

The monophyletic group of species around Dematochroma pilosa Jolivet, Verma & Mille is identified in this work by combining information from mitochondrial DNA data and morphological features. A series defining traits diagnosing assemblage its closest phylogenetic relatives, including the genera Thasycles Chapuis Atrichatus Sharp, used to argue for taxonomic separation propose a new genus, named...