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
Southern coasts, but with very few modern records.
Known from just five localities in Cornwall and mostly old records: singly on the beach, Portscatho (Champion, 1897); Rame Head in 1902 by J.H. Keys; Mousehole in 1923 and Pentire Point in 1968, both by R.T. Bannister; and Boconnoc Park in 1972 by K.C. Side. Rediscovered at Mousehole by John Walters in 2003.
Habitat & Ecology
Under stones on rocky or sandy sea shores, near high-water marks.
The main threat would appear to be from coastal protection works.
Natural beach transitions should be protected wherever they still survive.
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.