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Leaf-miner: An underside mine, with few creases and causing little leaf distortion. Some mottling of the upper leaf surface may be caused (British leafminers).

Oval, lower-surface tentiform mine. The lower epidermis has no recognisable folds, and in fact the mine is barely visible in the felty underside of the leaf. Frass heaped in an angle of the mine. Pupa in a barely recognisable flimsy 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).

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

The cremaster is smooth and rounded, with tiny spines (British leafminers).

The pupa is also illustrated in Bladmineerders van Europa.

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

Hosts in Great Britain and Ireland:

Salicacae
Populus	alba	White Poplar		Pitkin & Plant
Populus	alba	White Poplar		British leafminers
Populus	x canescens	Grey Poplar		Pitkin & Plant
Populus	x canescens	Grey Poplar		British leafminers

Hosts elsewhere:

Salicacae
Populus	alba	White Poplar		Belgian Lepidoptera
Populus	alba	White Poplar		Bladmineerders van Europa
Populus	x canescens	Grey Poplar		Belgian Lepidoptera
Populus	x canescens	Grey Poplar		Bladmineerders van Europa

Time of year - larvae: July, September-October (British leafminers).

Time of year - adults: Currently unknown.

Distribution in Great Britain and Ireland: Britain including Cambridgeshire, Dorset, Flintshire, Hertfordshire, Shropshire, Stafford, Surrey, West Norfolk and West Suffolk (NBN Atlas).

Distribution elsewhere: Widespread in continental Europe including Austria, Belgium, Bulgaria, Corsica, Czech Republic, French mainland, Germany, Hungary, Italian mainland, Latvia, Lithuania, Luxembourg, Poland, Romania, Russia - Central and South, Sardinia, Sicily, Slovakia, Spanish mainland, Switzerland, The Netherlands and Ukraine. Also recorded in Near East (Fauna Europaea).

NBN Atlas links to known host species:

British and Irish Parasitoids in Britain and elsewhere: