Cleptoparasitic: Hosts; There seems little doubt that Lasioglossum xanthopus is the host (E. Saunders, 1896a; R.C.L. Perkins, 1923, 1924; Hallett, 1928; Spooner, 1931; Richards, 1979). Morice (1901), however, considered that Andrena flavipes may be an additional host at Swanage, Dorset (Else & Edwards, 2018)