Local in damp woodland, marshes and on river-banks throughout much of England and Wales. Widespread and common in Hampshire, but scarce on the Isle of Wight, with only one record so far this century. Wingspan 23-25 mm. Always rests with wings closed, when appears remarkably similar to Rannoch Looper Itame brunneata
, with which there is no overlap of range in Britain. Larva feeds on Alder, over-wintering as a pupa.