Range & Status
Widespread, mainly in southern Britain but also northwards to Midlands and Wales, with isolated records in northern Scotland. This species shows an ability to adapt to habitat change.
Recorded at Trencom near St. Ives in 1989.
Habitat & Ecology
Occurs in broadleaved woodland and on hedgerow trees. The adults fly from May to late June, occurring at blossom and sap runs. Larvae develop in sap runs, originally mainly on Elm Ulmus spp.; after the loss of elms due to Dutch Elm disease, B. insensilis has been found on other trees and is clearly adaptable in this respect.
Removal or tidying up of old trees including in hedgerows.