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 scattered throughout the British Isles but apparently absent from the Cornish
At present known only on St. Mary' s in the Isles of Scilly (Jones & Pratley, 1987).
Habitat & Ecology
The St. Mary' s site is a coastal rubbish tip, but elsewhere this species can be found at coastal cliffs and a number of ruderal habitats such as old quarries, walls and derelict land.
The Isles of Scilly are designated for nature conservation. A thorough survey of suitable Cornish habitats is needed to establish a true picture of the mainland status of this species.
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.