Probably polylectic. Risch (pers. comm.) suggests that the species may have a preference for various Dipsacaceae.
Mavromoustakis (1948) reports visitation to Echium sericeum (Boraginaceae) and unspecified Asteraceae in Cyprus
Petanidou (1994) lists various species in the families Dipsacaceae, Asteraceae, Boraginaceae, Lamiaceae, Liliaceae, Cistaceae and Malvaceae in Attki (Greece). Standfuss (2009) reports visitation to Tremastelma (= Lomelosia) palaestinum (Dipsacaceae) and Teucrium divaricatum (Lamiaceae)