Leaf-miner: Egg well visible, on the upper surface (contary to Metallus
pumilus ). The mine is a large, transparant, upper-surface
blotch, yellowish green at first, brownish later. Silk is deposited
in the mine, but the quantity is too little to influence its colour;
also the mine does not contract, like in C.
marginea . All frass is ejected through a small opening in
the underside of the mine. Pupation takes place after hibernation,
within the mine; pupa 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).
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 not illustrated in UKMoths (check for update). The genitalia are not illustrated by the Lepidoptera
Dissection Group (check for update).
Hosts in Great Britain & Ireland:
of year - larvae:
September - October (Bladmineerders van Europa).
of year - adults: Currently unknown.
in Great Britain & Ireland: Britain (Karsholt and van Nieukerken in Fauna Europaea). See also British
leafminers distribution map.
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Distribution elsewhere: Widespread in continental Europe including Austria, Czech Republic,
Estonia, Finland, French mainland, Germany, Hungary, Italian mainland,
Latvia, Norwegian mainland, Poland, Romania, Slovakia, Sweden, The
Netherlands and Ukraine (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.