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.

Rhopalomyia ptarmicae

Range & Status

Diptera: Cecidomyiidae; local.

Regional Distribution

Five records, Lizard: SW71 at Trelan and Lizard National Nature Reserve in 1978; SW61 at Higher Predannack Cliff in 1974, near Kynance Cove in 2001; Gear SW75 in 2002.

Habitat & Ecology

Associated species: Sneezewort Achillea ptarmica ; shoot tip is galled, long shoots may arise from bud, each chamber containing a white larva.


Loss of heathland habitat by overgrazing and fire.


Most sites on The Lizard are within the National Nature Reserve or on land 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.