Food Plant: Alnus glutinosa (Alder), A.incana (Grey Alder)

Mine: June-September

Notes: The mine formed in the leaf-veins and midrib leads to an oval blotch, then a cut-out in leaf-blade.  The photo shows the first UK record for this species on A.incana

Data: 14.ix.2009, RHS Gardens, Wisley, Surrey, VC17

Image:© John Langmaid