A univoltine species with an extended flight period. The flight period is from Mid-May to late August in Finland (Söderman & Leinonen, 2003), In Germany, the females emerge in April and the males fly from the end of July to the beginning of October (Westrich, 1989)
Parasites The bees Sphecodes ephippius and S. hyalinatus have been cited as cleptoparasites of this species (Westrich, 1989; Söderman & Leinonen, 2003)