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
Most frequent in the south-west, but with sites northwards to north Wales; known in about 30 sites since 1960, with eight each in Devon and Cornwall (Stubbs, 1992).
In Cornwall, recorded since 1980 at Lerryn Creek, Ethy Wood (1983).
Habitat & Ecology
Occurs in wet woodland, including coastal sites with small streams through Grey Willow Salix cinerea . Its biology is unknown (Stubbs, 1992).
Drainage, pollution or clearance for plantation.
Most sites in Cornwall are on National Trust land.
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.