Food Plant: Betula spp. (Birch), Corylus avellanae (Hazel), Castanea sativa (Sweet Chestnut)

Egg: On the underside of the leaf

Mine: July-August

Notes: The inital gallery is contorted and then follows a vein, before often turning at right angles. In the free feeding phase the larva window feeds on the leaf. Found in woodland, heaths, moorland and bogs.

Data: 08.ix.2010, Herdosfoot mine, Cornwall, VC2, Melissa Banthorpe

Image:© Andy Banthorpe