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The Autumnal Moth (Epirrita autumnata) is a moth of the family Geometridae. It is found throughout the Palearctic region and the Near East and has a much wider distribution than its two close relatives (see below). This species is very similar to the November Moth and Pale November Moth and identification is usually only possible by examining the genitalia. In general this is the least variable of the three with melanic forms occurring less often. It is also usually on the wing earlier in the year, flying in September and October, although the flight seasons of all three species overlap. The larva feeds on alder, birch and larch. The species overwinters as an egg. References 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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