Restricted to, but well established in the Norfolk Broads.
Occurs in the Ant and Bure Marshes (with a strong colony on the BC reserve at Catfield Fen), Hickling Broad, Martham Broad, Yare River system (Surlingham Broad) and at the Strumpshaw RSPB reserve near Ranworth.
The larvae feed on Common Reed, over-wintering as an egg. Often recorded in areas where the reeds are regularly cut, with good numbers reported 2-3 years after cutting.
Retained Specimen / Photograph will be Required.
Recorded in 5 (7%) of 69 10k Squares. First Recorded in 1864. Last Recorded in 2020. Additional Stats