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 cleptoparasitic species that is found in open, sunny areas within the nesting sites of the host Andrena cineraria . A widespread species found from west Cornwall to east Kent and north to Durham. It has always been a scarce species in Cornwall, however, more recently it seems to have undergone a resurgence and is now known from at least seven post-1990 sites. Listed as RDB3 by Falk (1991) recent data for the Provisional Atlas' indicates that the status of this species could be downgraded.
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.