Leaf-miner: A gallery leading to whitish blotch. The larvae from the autumn
generation feed throughout the winter. Pupation occurs inside the
mine. Mines in shaded places can be large (British
at the upperside of the leaf. From there runs a short corridor that
widens into a long-elliptic blotch. The blotch is upper-surface,
whitish to yellow-brown; the larva lines the inside with much silk,
causing the mine to pucker slightly. All frass is ejected through
a small opening in the underside of the mine. Pupation within the
mine; the pupa is not enclosed in a cocoon (Bladmineerders van Europa)
mine is also illustrated (UKMoths).
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 British
leafminers, Bladmineerders van Europa and UKMoths.
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 .
The adult is illustrated in UKMoths. The genitalia are not illustrated by the Lepidoptera
Dissection Group (check for update).
Comments: The summer generation of this species is discussed in the British Leafminers Newsletter.
Hosts in Great Britain & Ireland:
of year - larvae: July, September - March (British
of year - adults: Two generations, May and June, and again in
in Great Britain & Ireland: A common species throughout
including Anglesey (VC52), Bedfordshire (VC30), Breconshire (VC42), Buckinghamshire (VC24), Caernarvonshire (VC49),
Cambridgeshire (VC29), Cheshire (VC58), Denbighshire (VC50), Derbyshire (VC57), Dorset (VC9), East Cornwall (VC2), East Gloucestershire (VC33), East Kent (VC15), East Norfolk (VC27), East Suffolk (VC25),
Glamorganshire (VC41), Herefordshire (VC36), Huntingdonshire (VC31), Merionethshire (VC48), Middlesex (VC21),
Monmouthshire (VC35), North Devon (VC4), North Essex (VC19), North Somerset (VC6), North Wiltshire (VC7),
Radnorshire (VC43), Shropshire (VC40), South Devon (VC3), South Hampshire (VC11), 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), Westmorland (VC69) and Worcestershire (VC37) (NBN
Gateway, as Emmetia marginea) and the Channel Is.
(Karsholt and van Nieukerken in Fauna Europaea).
See also British
leafminers distribution map, as Emmetia marginea.
recorded in the Republic of Ireland (Karsholt and van Nieukerken
in Fauna Europaea).
NBN Grid Map: as Emmetia marginea
NBN Grid Map : NBN Terms and Conditions
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elsewhere: Widespread in continental Europe including Albania,
Austria, Belarus, Belgium, Bulgaria, Corsica, Crete, Croatia, Cyprus,
Czech Republic, Danish mainland, Dodecanese Is., Finland, French
mainland, Greek mainland, Hungary, Italian mainland, Luxembourg,
Macedonia, North Aegean Is., Poland, Portuguese mainland, Romania,
Sardinia, Sicily, Slovakia, Slovenia, 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.