Oligolectic: Salix (Salicaceae) (Schmid-Egger and Scheuchl,1997). Sheuchl additionally lists Ficaria (Ranunculaceae) as a forage source.
Tomozei (2014), citing others, states that the species visits flowers of the Salicaeae, Ficaria (Ranunculaceae); Taraxacum (Asteraceae); Crataegus, Prunus, Cerasus (Rosaceae) and Trifolium, Cytisus (Fabaceae)(Kocourek 1966, Osytshnjuk 1977, Dylewska 1987, Osytshnjuk et al. 2005).