Upper-surface blotch. The inner wall is lined with much silk, giving
the mine a white colour. The silk also causes the mine to contract,
pulling the leaf margins upwards; the mine can be almost completely
hidden from view in this way. All frass is ejected from the mine.
Pupation within the mine (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).
Greenish white; head an prothoracic plate dark brown (Bladmineerders van Europa).
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
The adult is not illustrated in UKMoths (check for update). The genitalia are not illustrated by the Lepidoptera
Dissction Group (check for update).
Hosts in Great Britain & Ireland:
of year - larvae: Currently unknown.
of year - adults: Currently unknown.
in Great Britain & Ireland: Britain (Karsholt and van Nieukerken in Fauna Europaea).
NBN Grid Map:
Coptrotriche gaunacella, as Emmetia gaunacella
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Distribution elsewhere: Widespread in continental Europe including Austria, Corsica,
Czech Republic, French mainland, Germany, Greek mainland, Hungary,
Italian mainland, Poland, Romania, Slovakia, Slovenia, Sweden, Switzerland
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.