Square-spot Rustic Xestia xanthographa
([Denis & Schiffermüller], 1775)
Wingspan 32-35 mm.
A very common species, found in woodland edges, waste ground and suburban habitats, it has a distribution covering most of Britain.
A frequent visitor to the light-trap, it flies in August and September.
The nocturnal caterpillars feed during the winter, mainly on grasses, but also on other low-growing plants.