Broadly oligolectic on Asteraceae (Kuhlmann, pers. comm).
Müller & Kuhlmann (2008) list the following pollen sources: Asteroidea (Asteraceae) and Resedaceae based on 46 pollen samples from 21 different localities.
In Spain it is known to visit Cistaceae, Apiaceae and Asteraceae (Ornosa & Ortiz-Sánchez, 2004)