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
A cleptoparasite of the rare mining bee Andrena bucephala . Recently (2008) found as new to Cornwall in open woodland on the Port Eliot estate in S.E. Cornwall. A rare species that has declined considerably with post-1970 records only known from about a dozen sites in S. Devon, E. and W. Kent, Surrey and Berkshire. It has always been much scarcer than its host, which itself is very scarce and probably declining.
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.