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The wingspan is 38-44 mm, the forewings being variably marked with alternating pale and dark bands. Melanism is common and in some locations all-dark individuals make up the majority of the population. The species is extremely similar to two of its relatives, Pale November Moth and Autumnal Moth, and they cannot usually be separated without examination of the genitalia. The November Moth flies at night from September to November and is attracted to light and sometimes to nectar-rich flowers.
Chinery, Michael Collins Guide to the Insects of Britain and Western Europe 1986 (Reprinted 1991)
Skinner, Bernard Colour Identification Guide to Moths of the British Isles 1984
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