Food Plant: Betula spp. (Birch)

Egg: under the bark of young twigs

Mine: July - August

Notes: The mine in the petiole and midrib leads to an oval blotch, then a cut-out in leaf-blade (as shown). The mine in the petiole has been exposed, as the petiole ruptured.

Data: 09.ix.2016 , Siccaridge Wood, Gloucestershire, VC33

Image:© Guy Meredith