Wingspan c. 12mm.
Distributed mainly in the south-east of England, this species occupies oak woodland. Confusion over its distribution is compounded by the fact that this species was formerly known as ardeaepennella, and the previous ibipennella is a birch (Betula) feeder, now known as betulella.
The larva feeds on oak (Quercus), building a distinctive 'pistol-case' with a 'handle' of pale greyish silk.
The adults have white forewings and are similar to a number of other species, with only subtle differences in size and patterning in the forewing cilia to help distinguish them. They fly in July and August.