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Leaf-miner: The narrow mine begins a few cm below the tip of the leaf and runs downwards, sometimes along the leaf margin, sometimes in the center of the leaf. After hibernation the larva probably begins a new, similar mine, that becomes quite long, ending near the leaf base. Frass in a brown, regularly interrupted line. Pupation external; pupa attached to the leaf, not in a cocoon (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).

Yellowish white, head shining light brown; the prothoracic shield consists of two greyish, triangular, widely separated sclerites. Their shape and position is species-specific; see Steurer (1973a) for an illustration (Bladmineerders van Europa).

Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).

Adult: The adult is illustrated in UKMoths. The species is included in mothdissection.co.uk.

Hosts in Great Britain and Ireland:

Hosts elsewhere:

Cyperaceae
Carex	acuta	Slender Tufted-sedge		Bladmineerders van Europa
Carex	acutiformis	Lesser Pond-sedge		Bladmineerders van Europa
Carex	paniculata	Greater Tussock-sedge		Bladmineerders van Europa
Carex	riparia	Greater Pond-sedge		Bladmineerders van Europa

Time of year - larvae: September - July; larva overwinters in the mine (Bladmineerders van Europa).

Time of year - adults: Currently unknown.

Distribution in Great Britain and Ireland: Britain including Bedfordshire, Caernarvonshire, Cambridgeshire, Derbyshire, Dorset, Dumfriesshire, Dunbartonshire, East Norfolk, East Suffolk, Flintshire, Glamorgan, Herefordshire, Hertfordshire, Kincardineshire, Kirkudbrightshire, North Aberdeenshire, North Ebudes, North Essex, North Hampshire, Outer Hebrides, Shropshire, South Aberdeenshire, Stafford, West Norfolk, West Perthshire, West Suffolk, West Sutherland, Wigtownshire and Shetland (NBN Atlas).

Also recorded in the Republic of Ireland and Northern Ireland (Fauna Europaea and National Biodiversity Data Centre Map).

Distribution elsewhere: Widespread in continental Europe including Austria, Belgium, Czech Republic, Danish mainland, Estonia, Finland, French mainland, Germany, Hungary, Italian mainland, Latvia, Liechtenstein, Lithuania, Norwegian mainland, Poland, Russia - Central, North and Northwest, Slovakia, Sweden, Switzerland and The Netherlands (Fauna Europaea).

NBN Atlas links to known host species:

British and Irish Parasitoids in Britain and elsewhere: Currently unknown.

Belgian Lepidoptera
Biodiversity Heritage Library
Bladmineerders van Europa
British leafminers
Encyclopedia of Life
Fauna Europaea
NBN Atlas
NHM UK Checklist
UKMoths