Oligolectic: Fabaceae (Pesenko in Banaszak, 1995); visits Vicia sativa and less frequently V. sepium (Guichard, 1971).
In south-west Germany the prime pollen source is said to be V. sepium, V. cracca being of secondary importance (Westrich, 1989). On the Continent it also forages from Lathyrus species (Fabaceae) (F.K. Stöckhert, 1933; Guichard, 1971; Westrich & Schmidt, 1987; Westrich, 1989).
Söderman & Leinonen (2003) report visits to Lathyrus vernus and L. pratensis (Fabaceae) in Finland. Pekkarinen (1998) lists only Lathyrus, as a pollen source in Finland (Fabaceae).
Males of this species are known to pollinate the sexually deceptive orchid Ophrys araneola (Orchidaceae)(N.J. Vereecken, pers. comm.)
Ebmer (2009) reports specimens at Lathyrus vernus (Fabaceae) in Greece
Tomozei (2014), citing others, states that he species is oligolectic of flowers of Lathyrus (Lathyrus vernus, Lathyrus montanus, Lathyrus pratensis) and Vicia (Vicia sepium, Vicia cracca) species (Fabaceae), but was also recorded on other Fabaceae (Trifolium) and only exceptionally was found on flowers of Asteraceae (Taraxacum officinalis, Leontodon), Boraginaceae (Symphytum), Brassicaceae (Brassica), Lamiaceae (Thymus sp. Ajuga reptans) and Salicaceae (Salix aurita) (Stoeckhert 1933, Pittioni and Schmidt 1943, Kocourek 1966, Osytshnjuk 1977, Dylewska 1987, Westrich 1989, Schmid-Egger and Scheuchl 1997).