Halictus nidulans WALCKENAER 1817; Halictus lerouxii LEPELETIER 1841; Halictus quadrifasciatus SMITH 1870; Halictus lerouxii var ruborum COCKERELL 1898; Halictus lupinelli COCKERELL 1939; Halictus frater PESENKO 1984
One of the largest British halictine bees with a body length often over 10 mm. It is a distinctive bee with strong white pubescent bands on the apices of the abdominal segments and yellow-orange legs in both sexes.
Widely distributed throughout Britain and known from Ireland (Antrim). It is rarely abundant at any one locality in the south, but is frequently encountered in dense nesting aggregations in northern Britain. The species occurs in both the Palaearctic and the Nearctic regions, where it is largely confined to temperate habitats.