Uncommon, in coniferous woodland and plantations, in northern England and mid-Wales, with a thin scattering of records elsewhere. In Hampshire and on the Isle of Wight the occasional records of this species in the area suggest migration, but it is possible that a resident population occurs, as it evidently did at one time in the New Forest. There seems to have been an upturn in records in the 21st Century, and 2012 saw a minor influx with five sightings across all vice-counties. Further reports came in 2019 and 2023. Wingspan 21-25 mm. Large size and prominent discal spot make this a fairly distinctive pug. Larva feeds within young shoots of various coniferous trees, including Norway Spruce, Sitka Spruce, European Silver-fir and Noble Fir, over-wintering as a pupa.