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.

Prionus coriarius - Sawyer Beetle

Range & Status

Fairly widespread in England, but has been increasingly scarce in recent years and

increasingly confined to the south-east.

Regional Distribution

Millook and about Kilkhampton (Clark, 1906) and Ponts Mill in the Luxulyan Valley in 1981 by C.A. Brind, and Par in 2005.

Habitat & Ecology

Larvae develop in dead roots and stumps of a variety of tree species but especially Oak Quercus spp., Beech Fagus sylvatica and Birch Betula spp. in broadleaved

woodland and pasture-woodland, usually where soils are permanently damp such as along river floodplains.


Loss of older age classes of broadleaved trees and clearance of decaying stumps.


Retention of overmature trees and their associated deadwood.


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.