Univoltine, but with an extended flight period. The overwintering females emerge fairly late, the first from early to mid-May. The species may persist until the early October. The males are on the wing from the beginning of August (Westrich, 1989)or even late July (Amiet et al., 2001).
Balzan et al (2017) report females active in April in Malta.
Label data from Spanish specimens shows that females are active from April to October and the males from June to August (Ortiz-Sanchez & Pauly, 2017).
Parasites: None known