Found in the north of the British Isles, in isolated colonies from central Wales northwards to Orkney (absent from Shetland), with scattered colonies throughout Ireland, where it frequests upland wet areas such as bogs, peat mosses and moorland where the foodplant, principally Hare's-tail Cottongrass, and appropriate nectar sources are also found. A priority species for conservation concern due to reduction in habitat through drainage for industry or agriculture, rendering former sites unsuitable for this species.