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.

Criorhina ranunculi

Range & Status

Mainly a southern species but widespread in England, Scotland and Wales; locally

numerous in old woodland, even in small copses.

Regional Distribution

First recorded in Cornwall in 1909; since 1980 at Luckett (1990), Anthony Estate (1992), Torpoint, Keveral Wood, Seaton, Anthony and Grove Farm (1994), Penlee Battery (1996), Torpoint (1998), Seaton Valley (2002) and Angarrack, Hayle (2003).

Habitat & Ecology

Inhabits old woodland with much dead wood. The bumblebee-like adults come to early spring blossom from March to May. The larvae live in dead wood, but their requirements are as yet unknown.


Tidying up of old woodland.


Luckett is a National Nature Reserve, owned by the Duchy of Cornwall. Anthony Estate is National Trust land. Penlee Battery is a Cornwall Wildlife Trust Reserve.


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.