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 local, predominantly southern and western species in the British Isles.
Cornwall is perhaps the main UK concentration of the species; a large population in
Boconnoc Deer Park. May occasionally be overlooked as four-banded longhorn L.
quadrifasciata , which is the rarer of the two in Cornwall.
Habitat & Ecology
Larvae develop in the cambial layer of large freshly dead trunks and boughs of broadleaved trees in open woodland and pasture-woodland. Adults nectar at flowers of umbellifers, Bramble Rubus fruticosus agg. and Broom Cytisus scoparius .
Clearance of dead and fallen trees and branches; gaps in age classes of broadleaved trees; loss of old trees.
Boconnoc Park has a sympathetic owner and is a SSSI.
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.