Leaf-miner: Forms a blotch on the upper surface of the leaf, causing it to fold
upper-surface blotch, often occupying an entire leaflet. Fully developed
mines strongly contract, and the leaflet doubles along the midrib.
Almost all frass is ejected through a hole in the epidermis. Often
several mines in a (composite) leaf. Pupation external (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).
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.
The adult is illustrated in UKMoths. The genitalia are not illustrated by the Lepidoptera
Dissction Group (check for update).
Hosts in Great Britain & Ireland:
of year - larvae: September-October (British
of year - adults: Currently unknown.
in Great Britain & Ireland: Britain including the Channel
Is. (Karsholt and van Nieukerken in Fauna Europaea) including Bedfordshire (VC30), Cambridgeshire (VC29), Cheshire (VC58),
East Kent (VC15), Herefordshire (VC36), Isle of Wight (VC10), Shropshire (VC40), South Essex (VC18),
South Hampshire (VC11), Staffordshire (VC39), Warwickshire (VC38), West Gloucestershire (VC34), West Norfolk (VC28), West Suffolk (VC26) and Worcestershire (VC37) (NBN
as Emmetia angusticollella).
See also British
leafminers distribution map (as Emmetia angusticollella).
NBN Grid Map: as Emmetia angusticollella
as Emmetia angusticollella
NBN Grid Map : NBN Terms and Conditions
Maps are only displayed if the NBN server is active. N.B. Only publicly available records, if any, are shown by default
elsewhere: Widespread in continental Europe including Austria,
Belarus, Belgium, Croatia, Czech Republic, Finland, French mainland,
Germany, Hungary, Italian mainland, Macedonia, Malta, Republic of
Moldova, Norwegian mainland, Poland, Romania, Russia - East and
Northwest, Sardinia, 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.