This is a rare species with scattered records as far north as the Midlands and north Norfolk. It attacks Andrena praecox and flies at the same time (usually April when the pussy-willow is in blossom).
Status (in Britain only)
Listed as Endangered (RDB1) in the British Red Data Book (Shirt 1987) and by Falk (1991). Recent data suggests this status needs revision
Sites include open deciduous woodland, the coast (as at Dungeness, east Kent) and open sites where the host species occurs.
Univoltine; mid April (exceptionally March) to mid May.
A cleptoparasite of the mining bee Andrena praecox (Perkins 1919; Chambers 1949; Westrich 1989). It is only found with a small number of populations of this host species. Chambers (1949) also lists Andrena varians as a possible host.
Lesser celandine (Ranunculus ficaria), black currant (Ribes nigrum), sallow (Salix sp.) and dandelion (Taraxacum sp.).