Wingspan c. 11-13mm.
A local species, distributed in the southern half of England to Yorkshire, and in parts of Scotland, this was believed to be a birch-feeding form of C. limosipennella until the 1970s when it was split out into a separate species.
The adult moths have buff to ochreous forewings with a whitish streak along the costa. There is a single generation with adults in July.
The larval foodplant is birch (Betula, the larva constructing a long narrow case from which it feeds, creating brown blotches on the leaves.