A univoltine species with an extended flight period. The overwintering females emerge at the beginning of May, (occasionally April) and fly to the beginning of October. The males emerge in August and September.
Label data from a few Spanish specimens show that females are active from (at least) July to September, and males in August (Ortiz-Sanchez & Pauly, 2017).
Parasites Nomada sheppardana is cited as a possible cleptoparasite of this species (Westrich, 1989). Amiet et al. (2001) also cite Nomada posthuma.