A univoltine species: It is a summer species, flying from June to early September with its peak early in August depending on its latitude or altitude
Parasites The bee Nomada roberjeotiana is a known cleptoparasite of this species. In Finland, Nomada montana is cited (Söderman & Leinonen, 2003). Stöckhert (1933) and Kocourek (1966) report its nest parasites are Nomada obtusifrons and N. roberjeotiana