Univoltine. British specimens have been found from early to mid August, but on the Continent the species flies from the end of July to the beginning of September.
Parasites and predators None known in Great Britain. In Poland, the bee Sphecodes divisus is cited as a cleptoparasite of this species (Pesenko, Banaszak et al., 2000). Biastes truncatus is reported as a cleptoparasite of this species.(Westrich, 1989).