Nationally scarce (Nb) in damp woodland and log-piles in parts of southern England. In Hampshire and on the Isle of Wight was at one time virtually confined to the Bagshot Sands area of the north-east; however, the last three decades have seen it extend its range and the species is now reported in small numbers in pine-birch-heath habitats throughout. Wingspan 25-31 mm. Although the species is unmistakable once known, it is a rather atypical noctuid, more resembling a geometer superficially. Larva feeds communally on bracket fungi growing on decaying logs in damp woodland.
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