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 Cornwall, the host plant occurs in woodland along the edges of rivers such as the
Helford and the Fal. Probably this gall is common where the host occurs. VC1: SW72
2007; VC2: SX15 1999.
Habitat & Ecology
Associated species: Wild Service Tree Sorbus torminalis . Galls are round, raised pustules on both leaf surfaces, light yellowish green, changing to brown.
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.