Univoltine, with an extended flight period. The females emerge in March (Mavromoustakis, 1951), and the males appear later in the year. Mavromoustakis (1948; 1952) reports activity from April to August in Cyprus.
Cleptoparasitic: Hosts: Colletes cunicularius and doubtless other species as S. albilabris occurs in places where C. cunicularius is absent.