Symmorphus mutinensis BALDENI 1894; Symmorphus sinuatissimus RICHARDS 1935; Symmorphus sinuatus FABRICIUS 1793 preocc.
See Symmorphus crassicornis for literature on this species.
This wasp, previously known as Symmorphus mutinensis (Baldini), occurs throughout Britain and Ireland, including the Channel Islands. So far, however, it has not been recorded from the Isle of Wight. In Scotland it has been recorded as far north as Highland Region.