Nepticulidae ABH 4.044 B&F 64   *   Stigmella continuella Leaf mine photographs on Birch, Betula. September 2011 Wingspan: 4-5mm Season: Two generations, May and August Food plant: Birch (Betula spp.) Mine: June-July and September-October Egg underside, often in leaf axil. Slender corridor, initially strongly contorted causing a brown spot in the leaf. Later stages are straighter, often following a vein. Corridor +/- filled with coiled, greenish frass. Similar: Stigmella sakhalinella

Stigmella continuella
Leaf mine on Birch, Betula. Studland, Dorset. September 2011