Leaf-miner: A 'snail-trail'-like mine on the upper surface, long and sinuous,
with a dark central frass trail, ending at the leaf margin (British
long, rather broad, strictly epidermal, corridor that curves in
dense loops over the leaf upperside, without ever crossing itself.
Frass in a vague continuous central line. The gallery ends upon
the leaf margin, where it widens a little, while the leaf margin
folds over somewhat. Here pupation takes place, 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).
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
Under a silk membrane on the margin of leaf (British
leafminers). The pupa is illustrated in Bladmineerders van Europa.
The adult is not illustrated in UKMoths (check for update). The female genitalianut not the male genitalia (check for update), are illustrated by the Lepidoptera
Hosts in Great Britain & Ireland:
of year - larvae: June-July, August-September.
of year - adults: Currently unknown.
in Great Britain & Ireland: Britain including East Kent (VC15),
East Suffolk (VC25), Hertfordshire (VC20), Middlesex (VC21), North Essex and South Devon
See also British
leafminers distribution map.
NBN Grid Map:
elsewhere: Widespread in continental Europe including Austria,
Belgium, Czech Republic, Danish mainland, French mainland, Germany,
? Hungary, Italian mainland, Poland, ? Portuguese mainland, Romania,
Slovakia, Spanish mainland, Switzerland and The Netherlands. Also
recorded in Near East (Karsholt and van Nieukerken in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: