A univoltine species, flying in late spring, from May to June (Banaszak & Romasenko, 1989; Stanisavljević, 2000). In Cyprus, Mavromoustakis (1948) reports adult activity in April and May. Amiet et al. (2004) give a flight period in Switzerland from the mid-March to early August. Baldock et al. (in prep.) report flight activity from April to June in the Balearic Islands (Spain).
Fateryga (2017) reports female activity in the Krasnodar region of the North Caucasus (Russia) in June.