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.

Anisotoma humeralis - A leiodid beetle

Range & Status

Widespread across lowland Britain, but rarer in the far west.

Regional Distribution

Discovered in Landy Wood, Millook Valley and Camerance Wood, Fal Estuary in 1989.

Habitat & Ecology

Breeds in slime fungi under bark on the trunks or fallen boughs of dead trees; adults found in ripe powdery stage; also in bracket fungi.


Removal of decaying timber. Loss of older generations of trees.


Retention of suitable deadwood, and maintenance of age structure of trees to ensure future availability of habitat. Much of the Millook woodlands are now owned by the Woodland Trust, and Camerance Wood is a property of The National Trust.


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.