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.

Donacia sparganii - A reed beetle

Range & Status

Very localised across southern Britain, possibly declining.

Regional Distribution

Recently recorded in east Cornwall in SX06 (details not available).

Habitat & Ecology

Associated with Bur-reed Sparganium spp.; the larvae are aquatic, feeding at the roots of Bur-reed, and the adults are attracted to flowers of Yellow Water-lily Nuphar lutea .


Silting or artificial in-filling of water bodies; pollution.


Protect open waters and their catchments from damaging activities.


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.