Cornish Biodiversity Network  -  Supporting Wildlife Recording

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Cornish Red Data (2009)

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.

Porcellio dilatatus

Range & Status

An uncommon species nationally with scattered records from most of the British Isles.

Regional Distribution

Recorded from all five inhabited islands in the Isles of Scilly (Jones & Pratley, 1987), and one site on mainland Cornwall, Loe Pool near Porthleven.

Habitat & Ecology

Found in a variety of ruderal habitats including around old farm buildings and dung



None known.


Loe Pool is managed by the National Trust. The sites on the Isles of Scilly are within areas designated for nature conservation.


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.

Cornish Biodiversity Network. 2017.