Food Plant: Bromopsis ramosus (Hairy-brome), Calamagrostis epigejos (Wood Small-reed), Dactylis sp., Elymus repens (Common couch grass), Phalaris arundinacea (Reed Canary-grass), Phragmites australis (Common Reed) Elsewhere: Agrostis capillaris (Common Bent), Agrostis stolonifera (Creeping Bent) , Alopecurus pratensis (Meadow Foxtail), Ammophila arenaria (Marram), Anthoxanthum odoratum (Sweet Vernal-grass), Avena sativa (Oat), Briza sp., Bromus arvensis (Field Brome), Bromus erectus (Upright Brome), Bromus inermis (Hungarian Brome), Bromus hordeaceus (Soft Brome), Bromus tectorum (Drooping Brome), Calammophila baltica (Purple Marram), Digitaria sp., Festuca arundinacea (Tall Fescue), Festuca gigantea (Giant Fescue), Festuca pratensis (Meadow Fescue), Hierochloe australis, Holcus lanatus( Yorkshire-fog), Holcus mollis (Creeping Soft-grass), Hordeum vulgare (Six-rowed Barley), Lolium multiflorum (Italian Rye-grass), Lolium perenne (Perennial Rye-grass), Milium sp, Poa trivialis (Rough Meadow-grass), Secale cereale (Rye), Setaria sp., Trisetum sp., Triticum aestivum (Bread Wheat), Zea mais (Maize).

Mine: May-August

Notes: Form a long braod whitish mine in the leaf blade which may contain several larvae. The copious frass is washed out and greenish. The puparium is a shiny metallic black, with a prominent rear spiracle. Three puparia can be seen in the mine.

Data: 25.x.2022, Oxborough, Norfolk, VC28 adults emerged 28.ii.2023

Image:© Rob Edmunds