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
A scarce species, although widespread over England and Wales.
Listed in Clark (1906) and re-discovered in 1989 along the Morden Stream above Cotehele Bridge and in the Millook Valley. Found at Cadsonbury in 2002.
Habitat & Ecology
Characteristic of permanently damp woodlands such as valley bottoms. The larvae
probably develop in fallen branches, while the adults occur amongst the herb layer in the shady Alder Alnus glutinosa or Willow Salix spp. woodland.
Drainage improvements, leading to the drying out of woodland.
Protection of undisturbed wet woodlands.
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.