Flounced Chestnut Agrochola helvola
Wingspan 30-35 mm.
A variable species throughout its range, there are a number of named forms and aberrations. Relatively common in the southern half of England and Wales, less so in northern England, Scotland and Ireland.
The more northern populations inhabit moorland, but further south it is generally a woodland species.
The adults are on the wing in September and October, and the larvae feed on deciduous trees in the south, and mainly heather (Calluna) in the northern moors.