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
Widespread throughout southern England and Wales north to Yorkshire. Recent evidence suggests that it may be in decline. Numerous records for Cornwall prior to 1972, however, only eight post-1980 sites; the most recent ones from Windmill Farm (a Cornwall Wildlife Trust nature reserve) on the Lizard Peninsula (2007), and Rosemullion Head near Mawnan Smith (2004). It is a parasitoid of the eumerid wasp Odynerus spinipes .
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.