Excavator: Ground. Little known, but according to G.M. Spooner (pers. comm.) it forms nesting aggregations. On the Isle of Wight, Hamm observed that the species usually nests in looser sand than other Colletes, the entrance to the burrow always falling in when the female left the nest (Richards, 1937). In Hampshire, a nest burrow has been found in firm, sparsely vegetated, sandy soil (pers. obs.).