Hylaeus plantaris SMITH 1842; Hylaeus plumicornis COSTA 1884
Unique among British bees in carrying at least part of the pollen load in a shallow depression on the lower part of the face, the depression being bounded on each side by a usually prominent blunt process (hence the origin of its specific name).
Southern England, from East Devon to Kent, northwards to Wiltshire, Berkshire, Warwickshire, Oxfordshire, Northamptonshire, Cambridgeshire, Suffolk and Norfolk. There are no records from Ireland. Generally a rare species, though in recent years there has been a noticeable increase of records from various sites within its range. A similar increase has been noted in Holland (Koster, 1986b). Widely distributed in central and southern Europe, north Africa, Anatolia and the Caucasus (see distribution maps in Koster, 1986a and 1986b).