Nationally scarce (Na) in ancient deciduous woodland in parts of southern England, a priority species under the UK Biodiversity Action Plan. Still found in a few localities in its previous range which included most of England south of the Humber and parts of Wales. In Hampshire its decline mirrored the national trend and until recently was only reliably found in Pamber Forest, but in recent years has been found to have a relatively strong population in the Harewood Forest area. The only modern record from the Isle of Wight was a strong count of 22 in Parkhurst Forest in June 1988: it is therefore rather mystifying why it hasn't been reported from there since. Wingspan 32-34 mm. The most likely confusion species is the rare immigrant
Jubilee Fan-foot Zanclognatha lunalis, which see for differences. Larva feeds on Pedunculate Oak.