Extinct in the British Isles, formerly in marshes and on river-banks around Lake Windermere in Cumbria, where last recorded in 1914. Unlikely to be recorded in Hampshire or on the Isle of Wight. Wingspan 15-16 mm. The moderately conspicuous whitish antemedian patch on the dorsum, the small but distinct whitish postmedian spot only a little below the costa and the prominent pale yellow tornal spot distinguish this species [Bradley]. Larva feeds within stems of Touch-me-not Balsam.