Leaf-miner: The larvae feed in a blotch on the underside of a leaf of sallow,
causing the leaf edge to curl under when at the edge (UKMoths).
Fairly
small, lower-surface, tentiform mine, often toching the leaf margin.
The reddish brown pupa in a flimsy, whitish of very pale yellowish
cocoon; possibly the cocoon sometimes is missing altogether. Frass
packed in a corner of the mine (Bladmineerders van Europa).
Cannot
be separated (without opening mine or breeding moths) from mines
of other sallow-feeding species (British
leafminers).
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).
The larva is illustrated in Bladmineerders van Europa.
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
The pupa is 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:
Hosts elsewhere:
Time
of year - larvae: July, September - October (British
leafminers).
Time
of year - adults: Two generations producing adults in May and
again in July and August (UKMoths).
Distribution
in Great Britain and Ireland: Throughout the British Isles
(UKMoths)
including Anglesey, Bedfordshire, Breconshire, Caernarvonshire,
Cambridgeshire, Carmarthenshire, Cheshire, Denbighshire, Dorset,
Durham, East Cornwall, East Norfolk, East Suffolk, East Sutherland, Flintshire, Glamorgan, Hertfordshire, Huntingdonshire, Isle of Wight, Kirkudbrightshire, Merionethshire, Middlesex, Monmouthshire, North Northumberland, North Somerset, Outer Hebrides, Pembrokeshire, Shropshire, South Northumberland, South Somerset, South-west Yorkshire,
Stafford, West Cornwall, West Lancashire, West Norfolk, West Suffolk, Westmorland and Worcestershire (NBN
Atlas). It is commoner in the south and rather local in Scotland
(UKMoths).
See also British
leafminers distribution map.
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,
Belarus, Belgium, Corsica, Czech Republic, Danish mainland, Estonia,
Finland, French mainland, Germany, Hungary, Italian mainland, Latvia,
Lithuania, Luxembourg, Norwegian mainland, Poland, Romania, Russia
- Central, North and Northwest, Slovakia, Sweden, Switzerland, The
Netherlands and Ukraine. Also recorded in East Palaearctic (Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere:
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