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.

Dryops striatellus - A water beetle

Range & Status

A widely distributed though very localised species recorded from England and Wales with most records from southern counties.

Regional Distribution

Recorded from Goonhilly Downs in 1965 by R.T. Bannister and from the same area in 1993 by P. Kirby (pers. comm.). Found to be widespread on The Lizard heaths in surveys between 1996 and 2007 (Bilton, unpublished). Discovered by K.N.A. Alexander near Porthgwarra in 1987, the only known site away from The Lizard.

Habitat & Ecology

Recorded from pools, including temporary ones, on heathlands and in dune slacks. On The Lizard primarily found in small, temporary grassy pools on heathland.


Habitat loss.


The Lizard NNR covers some of the known sites.


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.