Colletes marginatus Smith 1846
Colletes marginatus Smith 1846 (nom. praeocc., nec Spinola 1851): 1277–1278, ♀, ♂ (syntypes: ♀♀, ♂♂, England).
Colletes thomsoni Alfken 1899: 146 –147, ♀, ♂ (type locality: Sweden).
Material examined. Armenia: 1 ♂, Alagos, Piragan [46°05'E 39°15'N], 16.VII.1924 (ZISP) ; Azerbaijan: 1 ♂, Sheki [=Nukha], Kuduly [47°10'E 41°11'N], 29.VI.1928, Bocharnikov (ZISP) ; 1 ♂, 25–35 km E Nakhichevan [45°42'E 39°11'N], 7.VII.1982, YAP (ZISP) .
Published records. Skhirtladze 1981 (Georgia: Shroma, Glola, Kaspi); Aliev 1985a (Azerbaijan: Kyurdamir); Aliev & Kirschey 2010 (Azerbaijan: Agdasch, Turianchay, Lerik, Zuvand, Gilidara).
General distribution. *Armenia, Austria, Azerbaijan, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Finland, France, Georgia, Germany, Great Britain, Greece, Hungary, Italy, Luxemburg, Netherlands, Norway, Poland, Romania, Russia, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey, Ukraine.