Food Plant: Alnus glutinosa (Alder), Myrica (Bog Myrtle).

Egg: Underside of leaf

Mine: July-October

Notes: A narrow mine almost filled with black frass, starting from a rough black egg-case.  The mines shown are on Myrica gale. After leaving the mine the larva 'window' feeds on the leaf surface (as shown).

Data: 21.ix.2011, Beaulieu Road, New Forest, Hants, VC11

Image:© John Langmaid