Lasioglossum immarginatum SCHENCK 1853
The inner spur of the hind tibia of the female is diagnostic for this bee in Britain, the teeth being broad and rounded apically, rather than narrow and pointed.
Southern England and the Channel Islands (Jersey). Scarce and very local but occasionally abundant where it is found. The species is apparently confined to the western Palaearctic, where it occurs from Britain east to the Urals, and south to North Africa (Morocco) and Iran.