Apis argentata FABRICIUS 1793; Apis albiventris PANZER 1798; Megachile saussurei RADOSZKOWSKI 1874; Megachile argentata fossoria FERTON 1909; Perezia maura FERTON 1914; Megachile leachella maadiensis VAN DER ZANDEN, 1986; Apis argentata auctt; Megachile dorsalis PEREZ 1879.
A small Megachile with green eyes in life. Tergite 6 of both sexes is clothed largely with adpressed white hairs and the female’s scopal hairs are also white. These characters readily distinguish this species from other Megachile species in Britain. Formerly known in the British literature by the names Megachile argentata and M. dorsalis.
Southern England and south Wales. Also known from the Channel Islands (Guernsey and Jersey), but not from Scotland and Ireland. The bee is often locally abundant. Widely distributed in the western Palaearctic, from southern Fennoscandia south to North Africa, and east to the Middle East. However, precise limits are not known owing to confusion with very closely related species that are frequently difficult to identify to species. In northern Europe the distribution of M. leachella is largely coastal.