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.

Calambus bipustulatus - A click beetle

Range & Status

A thin scatter of records across southern Britain.

Regional Distribution

Develops in overmature Oaks Quercus spp. along Fowey River on the Lanhydrock Estate, recorded in 1989 (Alexander, 1991a).

Habitat & Ecology

Larvae are predators of other invertebrates in the relatively soft decaying heartwood of Oaks and other broadleaved trees. The adults nectar at blossom, including Hogweed Heracleum spp.


Loss of older age classes of Oaks.


The Lanhydrock Estate is owned by 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.