Food Plant: Ulmus pumila x japonica (Sapporo Autumn Gold), Ulmus 'New Horizon', Ulmus 'Lobel', Ulmus minor ssp. minor, Ulmus procera (English Elm)

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, follows a vein before turning away. The final mine is 11-15mm long. Discovered in 2006 in Farnham, Surrey (Langmaid et al 2007). It hasnow been found in Southern Counties from Kent to Bedfordshire (Banthorpe, 2021).

Data: 15.x.2021, Abbotsley, Huntingdonshire, VC31

Image:© Barry Dickerson