Colletes mixtus species-group

C. kozlovi Friese 1913: Figs 11a –b. Colletes roborovskyi species-group C. roborovskyi Friese 1913: Figs 11 c–d. Colletes uralensis species-group

C. uralensis Noskiewicz 1936: Figs 11 e–f.

Colletes fodiens species-group

C. daviesanus Smith 1846: Figs 12a –b.

C. fodiens (Fourcroy 1785): Figs 12 c–d.

C. perforator Smith 1869: Figs 12 e–f.

C. ravulus Noskiewicz 1936: Figs 5 c–d.

C. similis Schenck 1853: Figs 13 c–d.

Colletes senilis species-group

C. laevifrons Morawitz 1893: Figs 14a –b.

C. mlokossewiczi Radoszkowski 1891: Figs 14 c–d.

C. senilis (Eversmann 1852): Figs 14 e–f.

Colletes clypearis species-group

C. floralis Eversmann 1852: Figs 15a –b.

C. friesei Cockerell 1918: Figs 16 e–f.

C. fulvicornis Noskiewicz 1936: Figs 15 e–f.

C. impunctatus Nylander 1852: Figs 17a –b.

C. jankowskyi Radoszkowski 1891: Figs 15 c–d.

C. pseudocinerascens Noskiewicz 1936: Figs 16a –b. This species is very similar to C. ulrikae but S7 is slightly longer with its apical part broader in relation to the median part and the punctures on T1 are smaller and more regular in shape than in C. ulrikae .

C. sidemii Radoszkowski 1891: Figs 17 c–d.

C. ulrikae Kuhlmann 2002: Figs 16 c–d; see C. pseudocinerascens .

Colletes marginatus species-group

C. chengtehensis Yasumatsu 1935: Figs 18a –b. This species is very similar to C. marginatus but S7 is apically narrower, punctation on T1 is slightly finer and apical tergal hair bands are a bit broader than in C. marginatus .

C. marginatus Smith 1846: Figs 18 c–d; see C. chengtehensis .