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.
Range & Status
Nematoda: Anguinidae; local.
One record from Treveague near Boscastle SX19 in 2006.
Habitat & Ecology
Associated species: Yarrow Achillea millefolium . The yarrow leaf-gall nematode causes rounded, green galls on leaves, 2-5 mm. diameter, each containing one or more pairs of adults or a mass of tiny juvenile worms.
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.