Mueller (1996) states that this is a polylectic species, with a strong preference for Lamiaceae. Pollen analysis revealed the following pollen sources: Lamiaceae, with smaller amounts of Fabaceae and Scrophulariaceae
Mavromoustakis (1960) lists the following forage sources on Rhodos: Lotus sp. (Fabaceae); Satureja thymbra (Lamiaceae).
Specimen data from Israel, Greece and its islands includes records of visits to: Teucrium divaricatum, Thymus capitatus (Lamiaceae); Cistus creticus (Cistaceae)