Colletes daviesanus signatus VERHOEFF, 1890; Colletes canus GMELIN, 1790; Colletes inexpectatus NOSKIEWICZ, 1936; Colletes daviesanus tuberculatus MORAWITZ, 1894
Widely distributed throughout England, Wales and the Channel Islands, but scarce in Scotland, where it is known only from scattered coastal sites as far north as Invernesshire. Published records from the Outer and Inner Hebrides (Heslop Harrison, 1952) are almost certainly misidentifications of Colletes floralis. It is also scarce in Ireland, with records from Kilkenny, Wexford and Down. Widely distributed in Europe, occurring from Fennoscandia south to Austria and northern Italy, and east to Iran. Also reported from Mongolia and the Gobi.