Cleptoparasitic: Hosts. Celary (1990) cites Systropa curvicornis, S. planidens and Rophites quinquespinosus as hosts of this bee. Bogusch (2003) cites only Rophites quinquespinosus. In addition, Westrich (1990, 2018) lists Rophites algirus as a host.