Local in saltmarshes, grassland, moorland and farmland throughout England, including Hampshire and the Isle of Wight, and virtually confined to the coast, with only a thin scattering of records inland. Wingspan 32-42 mm. Diagnostic feature is a distinct, often solid, dark tooth-like mark in centre of forewing (MBGBI Vol 9). Larva feeds on various herbaceous plants, including Common Sea-lavender, Greater Plantain and Goosefoot, over-wintering as a pupa.