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
Syn. P. vittata . Formerly widespread in England, but has become increasingly scarce.
An old record from Zennor, and found at Erisey on The Lizard in 1981 (N.C.C survey). A more recent record from SX06 in Cox (2007).
Habitat & Ecology
Associated with various cultivated and wild Brassicaceae, including Wild Cabbage
Brassica oleracea and other Brassica spp. crop species, as well as Radish Raphanus spp., Mustard Sinapis spp., Yellow-cress Rorippa spp., etc, but not an economic pest species in Britain. Larvae feed on the roots.
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.