Cleptoparasitic: Hosts; Possibly a cleptoparasite of several of the larger Andrena species, although A. scotica seems to be its main host (perhaps the only one in northern Britain and throughout Ireland). G.M. Spooner (pers. comm.) observed specimens entering A. scotica burrows, and Chambers (1949) recovered an individual from such a burrow. Other authors who list this Andrena as a host [ usually as A. jacobi] include R.C.L. Perkins (1919g) and Stelfox (1927). The closely related A. trimmerana is probably a host in both its broods (R.C.L. Perkins, 1919g). Other possible hosts are A. ferox (Yarrow & Guichard, 1941), A. nigroaenea (V.R. Perkins in Witchell & Strugnell, 1892; Chambers, 1949) and A. haemorrhoa (at burrows, Gardner 1901c). K.M. Guichard has collected specimens near the burrows of A. flavipes (NHML).
In the former Czechoslovakia, Kocourek (1966) additionally cites Andrena rosae as a host. Scheuchl & Willner, 2016 (also cited in Smit, 2018) cite Andrena assimilis as a possible host