(Zincken, 1818)[Synonyms: Microthrix similella]
Wingspan 19-22 mm.
A distinctive species with its very dark forewings and broad white cross-line, it is however a scarce resident, occurring only in the south of England.
It inhabits old, mature woodland and parkland, and spends much of its life high up in large oak trees, the larval foodplant.
The flight period is from June to July.