Acleris ferrugana/notana agg.

Wingspan 14 to 18 mm. Acleris ferrugana and Acleris notana very variable species, and can be very similar. The two are best separated by examination of the genitalia.  Where genitalia examination has not been carried out the species should be added as an aggregate.

Various habitats, especially woodland.

The adults fly in July and again in September and October, the second generation overwintering to reappear in spring.

Acleris ferrugana larvae feed mainly on Oak in a spinning between leaves, whilst the food plant for Acleris notana is Birch.

Fairly frequent and widespread in Britain as an aggregate. In the Butterfly Conservation's Microlepidoptera Report 2011 this species were classified as common.

Fairly frequent but not common as an aggregate in Leicestershire and Rutland.