The descriptive text, below the map, is from the Cornish Red Data Book (2009). The map on this web page depicts the organisms distribution and shows the records made pre-2000 and those made since.
Range & Status
Widespread in southern and central England and Wales, north to Durham, with isolated records in Scotland. An indicator of primary woodland.
Post-1980 records are from the Perranporth area, at Dunmere (1986) and the Boscastle area.
Habitat & Ecology
The adults fly between June and August in shaded areas near streams in broadleaved woodland. The biology of the larvae is unknown.
Loss of woodland including associated streams.
I.J. Bennallick, S. Board, C.N. French, P.A. Gainey, C. Neil, R. Parslow, A. Spalding and P.E. Tompsett. eds. 2009. Red Data Book for Cornwall and the Isles of Scilly. 2nd Edition.Croceago Press.
The Cornish Red Data Book Project was led by the Cornwall and Isles of Scilly Federation for Biological Recorders (CISFBR). The full text and species accounts (minus the maps) are available on the CISFBR website.