downwards from leaf tip to stem. Makes a long narrow yellowish mine.
May be up to four larvae in one leaf (British
narrow yellowish corridor, descending from the leaf tip to its base;
at times 3-4 larvae in a leaf. Often several larvae in a communal
mine. Pupation outside the mine (Bladmineerders van Europa).
Larva: The larvae of moths have a head capsule and chewing mouthparts with opposable mandibles (see video of a gracillarid larva feeding), six thoracic legs and abdominal legs (see examples).
Body yellowish; head and prothoracic shield pale brown; prothoracic
shield divided (Bladmineerders van Europa).
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
The adult is illustrated in UKMoths.
genitalia, but not the female genitalia (check for update), are illustrated by the Lepidoptera Dissection Group.
Festuca arundinacea is
treated as Schedonorus
arundinacea (Tall Fescue) by Stace (2010).
Hosts in Great Britain & Ireland:
of year - larvae: February-May; June-July (British
of year - adults: There are two generations with flight periods
in May and June and again from July to August (UKMoths).
in Great Britain & Ireland: Distributed mainly in southern
England and south Wales (UKMoths)
including Bedfordshire (VC30), Berkshire (VC22), East Gloucestershire (VC33), East Suffolk (VC25),
Glamorganshire (VC41), North Essex (VC19), North Somerset (VC6), South Devon (VC3), South Wiltshire (VC8),
Warwickshire and Worcestershire (VC37) (NBN
Gateway, as Cosmiotes stabilella).
NBN Grid Map:
stabilella, as Cosmiotes stabilella
NBN Grid Map : NBN Terms and Conditions
Maps are only displayed if the NBN server is active. N.B. Only publicly available records, if any, are shown by default
elsewhere: Widespread in continental Europe including Czech
Republic, Danish mainland, Germany, Hungary, Norwegian mainland,
Poland, Portuguese mainland, Romania, Slovakia, Spanish mainland,
Sweden, Switzerland and The Netherlands (Karsholt and van Nieukerken
in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.