Food Plant: Ammophila arenaria (Marram), Dactylis sp.,Elymus spp., Phalaris arundinacea (Reed Canary-grass), Triticum aestivum (Bread Wheat) Elsewhere: Hordeum vulgare (Six-rowed Barley), Lolium sp., Milium sp., Secale cereale (Rye)

Mine: May;August

Notes: The shallow greenish mine runs towards the leaf apex and can widen into a blotch. Pupariation is within the mine and the puparium formed is a shiny brownish black, not anchored by a thread. The puparium is found just below the top of the two mines. A common grassland species. The mines shown look typical but the adult needs to be reared to confirm this identification.

Data: 19.ix.2023, Downham Market, Norfolk, VC28

Image:© Rob Edmunds