Local in damp woodland, fens and marshes, and on river-banks throughout the British Isles. Widespread and common in Hampshire and on the Isle of Wight. Wingspan 22-26 mm. Small size and distinct dentate subterminal fascia differentiate this species from Seraphim Lobophora halterata. Larva feeds on Sallow and White Willow, over-wintering as a pupa.
The abundance in each month is indicated as follows:
No records Very occasional Irregular Uncommon Off-peak, but not unusual Off-peak, but not unusual Main flight time