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
Acari: Eriophyoidea; locally common in Britain.
Two records from two 10km squares: SV80 from The Gugh on the Isles of Scilly in 1974 and VC2: SW96 in 1987.
Habitat & Ecology
Associated species: Germander Speedwell Veronica chamaedrys . The gall is hairy and very variable in size, appearing in June and maturing in mid-autumn. The leaf margins of the host plant are twisted or slightly rolled but do not approach at their margins to form a pouch.
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.