Megachile rufiventris SCHENCK; Megachile octosignata SCHENCK; Megachile distincta PÉREZ 1897; Megachile pilicruriformis COCKERELL 1928;
An identification key is available (Else, 1999). Females from the British mainland have the scopal hairs on sterna 5-6 black. Those from the Isle of Man and from Ireland have them extensively golden red, although the black form has been seen in Ireland too (D B Baker, pers. comm.).
Recorded from southern England northwards to the coast of south-west Scotland. The majority of records are from south-east England along the south coast and up to Bristol. Also recorded from Ireland but apparently absent from the Channel Islands.
Distributed throughout much of western and central Europe, Lithuania and Finland.