Gracillariidae     Gracillariinae ABH 15.025 B&F 301   *   Parornix betulae Leaf mine photographs on Birch, Betula Wingspan: 9-10mm. Adults need gen.det. for identification Flight time: May and August. Food plant: Birch (Betula spp.) Mine: June and September-October Egg on underside. Initially forms a Phyllonocter-like mine but brown rather than green beneath, clumped frass in a corner. The larva leaves the mine and continues feeding under a downwards fold of the leaf margin or tip.

Parornix betulae
Slepe Heath, Dorset. November 2015