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
Widely recorded in southern England from west Cornwall to east Kent and northwards to Gloucestershire, Herefordshire, Bedfordshire, Suffolk and from south Wales. There are numerous older records and at least 12 post-1980 sites, mainly coastal, but also two recent records from open woodland at Lamorran. This is a very local species which has declined over much of its range, especially at its more inland sites.
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.