As this is a cleptoparasitic species, all flower visits will be for nectar only.
Like its host, a regular visitor to flowers of Knautia arvensis and Scabiosa columbaria (Dipsacaceae)(Celary, 1995); also Trifolium repens (Fabaceae) and Crepis capillaris (Asteraceae)(Hamm, 1901). The species has been swept from Odontites verna (Scrophulariaceae) (G.M. Spooner, pers. comm.).