A small narrow mine on a wide variety of grasses. In the spring
the larva changes leaves and mines tip downwards. The mine fills
the leaf width. The frass is packed in the top of the mine (British
autumn the larva makes a narrow corridor a few cm in length, in
which it hibernates. In March it moves to a new leaf. Here a transparent,
full depth mine is made that descends from the leaf tip, and occupies
the entire width of the blade. Most frass is concentrated in the
oldest, highest, part of the mine. The larva may leave its mine
and restart elsewhere. 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).
Grey green with a faint white dorsal line. Head pale brown; prothoracic
shield brown, consisting of 4+4 small plates (Bland, 1996a) (Bladmineerders van Europa). The larva is illustrated in British
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
The pupa is illustrated in British
The adult is illustrated in UKMoths and the Encyclopedia
of Life. The male
genitalia are illustrated bt the Lepidoptera Dissection Group.
Hosts in Great Britain & Ireland:
of year - larvae: Autumn - Spring (British
of year - adults: The adults are on the wing mostly in June
and July, and fly from evening onwards, being attracted to light
after darkness (UKMoths).
in Great Britain & Ireland: Common throughout Britain (UKMoths)
including Anglesey (VC52), Banffshire (VC94), Bedfordshire (VC30), Breconshire (VC42), Buckinghamshire (VC24),
Caernarvonshire (VC49), Cambridgeshire (VC29), Carmarthenshire (VC44), Cheshire (VC58), Cheviotland,
Cumberland (VC70), Denbighshire (VC50), Derbyshire (VC57), East Cornwall (VC2), East Gloucestershire (VC33),
East Norfolk (VC27), East Ross (VC106), East Suffolk (VC25), Easterness (VC96), Elgin, Glamorganshire (VC41),
Herefordshire (VC36), Hertfordshire (VC20), Kincardineshire (VC91), Mid-west Yorkshire (VC64), Middlesex (VC21),
North Aberdeenshire (VC93), North Ebudes (VC104), North Essex (VC19), North Somerset (VC6), North Wiltshire (VC7), South Northumberland (VC67), Pembrokeshire (VC45), Radnorshire (VC43), Shropshire (VC40),
South Aberdeenshire (VC92), South Devon (VC3), South Essex (VC18), South Lancashire (VC59), South Wiltshire (VC8), Staffordshire (VC39), Surrey (VC17), Warwickshire (VC38), West Cornwall (VC1), West Gloucestershire (VC34),
West Kent (VC16), West Lancashire (VC60), West Norfolk (VC28), West Suffolk (VC26) and Westmorland
Gateway), the Channel Is. (Karsholt and
van Nieukerken in Fauna Europaea).
See also British
leafminers distribution map. It occurs in grassy habitats (UKMoths).
recorded in the Republic of Ireland and Northern Ireland (Karsholt and van Nieukerken
in Fauna Europaea). See also Ireland's NBDC interactive map.
NBN Grid Map:
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elsewhere: Widespread in continental Europe including Austria,
Belgium, Croatia, Czech Republic, Danish mainland, Estonia, Finland,
French mainland, Germany, Hungary, Italian mainland, Latvia, Liechtenstein,
Lithuania, Luxembourg, Norwegian mainland, Poland, Portuguese mainland,
Romania, Russia - Central, Slovakia, Spanish mainland, Sweden, Switzerland,
The Netherlands and Yugoslavia (Karsholt and van Nieukerken in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
Calamagrostis epigejos, Dactylis
British and Irish Parasitoids in Britain and elsewhere: