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.

Plagiotrochus quercusilicis

Range & Status

Hymenoptera: Cynipidae; sexual stage; first British record for the genus and not just for the species. Probably introduced from mainland Europe.

Regional Distribution

One record (sexual stage) found by Rex and Barbara Hancy at the Eden Project SX0454 in mid-June 2004.

Habitat & Ecology

Associated species: Quercus ilex . Large globular gall occurs on both upper and lower leaf surfaces. Galls were found on one of a number of Quercus ilex planted in a row.






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.