Food Plant: Ulmus pumila x japonica (Sapporo Autumn Gold)

Egg: Underside of leaf, usually close to a midrib

Mine: June, October

Notes: Starts as a contorted frass-filled gallery, between the midrib and vein. Later the gallery, with broken black frass, follws a vein before turning away. The final mine is 11-15mm long. Discovered in 2006 in Farnham, Surrey.

Data: 24.x.2006, Farnham, Surrey, VC17

Image:© Rob Edmunds