Mine: Bivoltine: late spring & summer

Pupa: Outside the mine in the cut-out disc.

Notes: A broad gallery with scattered frass, usually along the edge of the leaf, ending at a circular blotch from which a case is cut leaving a round hole. (Formerly called Rhynchaenus rusci). The larva (as shown) is a yellow colour, wity distinctive anterior markings

Data: 03.vi.2005, Basingstoke, Hants, VC12