As this is a cleptoparasitic species, all flower visits will be for nectar only.
Known nectar sources include: Potentilla argentea (Rosaceae); Sedum acre (Crassulaceae); Thymus (Lamiaceae); Epilobium angustifolium (Onagraceae); Trifolium repens, Trifolium arvense (Fabaceae); Centaurea jacea, Hieracium pilosella (Asteraceae)(Westrich 1989, 2018).