([Denis & Schiffermüller], 1775)
Wingspan 11-23 mm.
A fairly common species over most of Britain except for parts of Scotland, inhabiting dry, open and grassy areas.
The larvae feed inside the flowerheads of knapweed (Centaurea) and saw-wort (Serratula). In Centaurea nigra the larvae may be confused with the very similar larvae of Eucosma cana.
A single-brooded species with a flight period from June to August.