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 northern species in England, Scotland and Wales, with most records from the Scottish highlands. Extremely local, but now known from about 35 sites and revised from RDB3.
Only recorded at Lamalooe Bridge in 1992; the nearest records are in south Wales and the south Midlands.
Habitat & Ecology
A marshland species with larvae probably feeding on aphids. The adults, flying May-
August, are known to feed on the pollen of Sedges ( Carex spp.).
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.