A very similar bee to the closely related Lasioglossum quadrinotatum (Kirby); the two species are best distinguished by characters of the male genitalia.
Widespread in southern Britain, being found from the Isles of Scilly to East Kent and north to Yorkshire and in Wales but not in Scotland or the Isle of Man. It is known from the Channel Islands but only from Jersey. Recorded from Ireland in O’Connor et al. (2009).
Abroad, a western Palaearctic species, found from Western Europe east to Iran, north to southern Sweden and south to Iberia and Crete; accidentally introduced into the Azores (A W Ebmer, pers. comm.).