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
Formerly widespread in Britain and may have become scarcer; more-or-less confined to the south.
Old records from Tregantle Down, Whitsand Bay (Walker, 1875) and Gwithian in 1936 by R.T. Bannister.
Habitat & Ecology
Feeds on Thale Cress Arabidopsis thaliana and occasionally Shepherd' s Cress Teesdalia nudicaulis and other Cruciferae on coastal shingle, saltmarsh and waste ground.
As the foodplant is ruderal, disturbance must be the key to its conservation.
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.