September Thorn (Ennomos erosaria) | Species | ||||||||||||||||||||||||
 Taken at Aston, Oxon., on August 16th 2023. (1/250th sec at f13. © David Hastings) DescriptionFamily: Geometridae Wing span: 34 - 42mm This moth is distinguished by a plain or very slightly speckled orange-brown or fawn wings, and almost always there is no central crescent. Cross-lines generally converge closely to the trailing edge. It holds its wings at a steeper angle than the August Thorn. It is fairly widespread in England and Wales. It is much more local further north than Yorkshire and Cumbria. Habitats are woodland, parkland and gardens. There is one generation from July to early October. It over-winters as an egg on the food-plant. Larvae feed on oaks, birches, limes and Beech. It comes to light, but is otherwise seldom seen. Sightings
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