Length 5 to 10 mm. This is a reddish-brown rather bronze-metallic looking species.

Anywhere that Hawthorn occurs.

Adults are active from mid-June to late September.

The species is associated with Hawthorn, the larvae bore beneath the bark producing a snaky, zig-zag pattern.

Previously classed as nationally scarce, it seems to be becoming more frequent although it remains mainly restricted to the southern half of Britain.

Scarce in Leicestershire and Rutland. There were only 4 VC55 records for this species up to March 2015.