Food Plant: Alnus glutinosa (Alder)

Egg: Upper side of leaf

Mine: May-July:August-October

Pupa: Under a silk membrane on underside of leaf

Notes: Initially in an irregular upper surface gallery becoming a blotch usually over a vein . Later in two successive longitudinally rolled leaves (as shown).

Data: 10.viii.2019, Rodden Nature Reserve, North Somerset, VC6

Image:© Jenny Vickers