Polylectic; pollen hosts recorded so far are Fabaceae, Boraginaceae (e.g. Echium) and Lamiaceae (A. Müller, unpublished, based on 5 pollen samples from 3 different localities). The females are equipped with a specialized pilosity on the clypeus composed of curved bristles, which are probably used to comb pollen from the nototribic anthers of Lamiaceae and Plantaginaceae (Antirrhineae) (Müller, 1996b).