Phalaris arundinacea
Larvae have been recorded on bent ("Agrostis" species), sweet vernal grass ("Anthoxanthum odoratum"), sedge ("Carex" species), tufted hairgrass ("Deschampsia cespitosa"), fescue ("Festuca" species), Yorkshire fog ("Holcus lanatus"), reed canary grass ("Phalaris arundinacea") and smooth meadow-grass ("Poa pratensis"), but tufted hairgrass is the main hostplant. The other host plants are not all equally trustworthy because of possible confusion with "Elachista canapennella".