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.

Cryptocephalus frontalis - Chalk Hook-moss

Range & Status

Thin scatter of localities across central and south-eastern England.

Regional Distribution

Discovered near Gweek by R.T. Bannister in 1965 - the only record for the whole of the south-west.

Habitat & Ecology

Adults and larvae feed on the foliage of Hawthorn Crataegus monogyna and Grey Willow Salix cinerea , where open-grown along hedgebanks, etc.


Close-trimming of hedgerows and too regular cutting.


Precise site details not available so conservation plan cannot yet be determined.


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.