A species of fens and reed-beds, damp meadows and wasteground. In Hampshire and on the Isle of Wight, first recorded in the county in 1973, but not seen again until 1988. Since then, it has become established and is evidently spreading, though still at low density; most commonly found in the Test valley above Stockbridge, with scattered records elsewhere. Wingspan 21-23 mm. Prominent dark discal spot precludes confusion with any other species [Goater]. Larva feeds on Thistle Carduus/Cirsium.