Oligolectic on Heliotropium (Boraginaceae) (A. Müller, unpublished, based on field observations and 50 pollen samples from 9 different localities; Hohmann et al., 2003). Additional flower records: Neurada procumbens (Neuradaceae)(Peters, 1974).
All three species in the genus exploit flowers of Heliotropium (Boraginaceae) as probably exclusive pollen source. The females have long, apically curved and capitate bristles on their labial palpi (Peters, 1974). As already assumed by Peters (1974), these modified bristles serve to extract pollen from the tiny and narrow-tubed Heliotropium flowers (A. Müller and C. Sedivy, personal observation for H. circumventa).