As this is a cleptoparasitic species, all flower visits will be for nectar only.
Flowers visited Ulex europaeus (Fabaceae); Euphorbia amygdaloides (Euphorbiaceae); Salix (Salicaceae) and Taraxacum (Asteraceae).
Smit (2004) lists Taraxacum officinale (Asteraceae) as a nectar source.