Nationally scarce (Nb) on saltmarshes, mud-flats, estuaries and brackish marshes, along the coasts of England and Wales. In Hampshire confined to the coastal salterns on the south coast and the Isle of Wight, where it is locally fairly common; its headquarters appear to be on Hayling Island. Wingspan 42-50 mm. Larva feeds on roots and lower stems of Common Saltmarsh-grass, Reflexed Saltmarsh-grass and Bulbous Meadow-grass.