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
Main populations now confined to heathland areas in west Cornwall, Dorset and the New Forest. There are also modern records from Sussex and Surrey. A national distribution map is provided by Foster (1983).
Modern records are confined to The Lizard heaths. There is one 19th century record from the Land' s End area.
Habitat & Ecology
Occurs in both temporary and permanent heathland pools, although most frequent in the former. Also recorded from slow running water on heathland.
Loss of heathland habitats.
Most sites are either within The Lizard NNR or various SSSI, and some are under the
00 ownership of The National Trust.
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.