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.

Orchestes testaceus - Alder flea weevil

Range & Status

Formerly widespread across southern England, but has become very rare.

Regional Distribution

Discovered at Ruan Lanihorne in 1978 (Foster, 1996) and still there in 2003.

Habitat & Ecology

Feeds on the fresh foliage of Alder Alnus glutinosa in late spring.


None known.


The only Cornish locality lies within an important SSSI. This species is listed on the UK BAP Priority Species list (2007).


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.