Endangered (proposed as a future Red Data Book species) in parts of eastern Scotland. Not recorded in Hampshire or on the Isle of Wight to date. Wingspan 18-19 mm. Differs from A. semifasciana by the generally more whitish forewing ground colour, the more outwardly oblique inner edge of the median fascia and the more strongly angulate outer edge of the subbasal fascia, however these differences are not pronounced and examination of the genitalia may be necessary for positive identification [Bradley]. Larva feeds on Sallow.