The larva forms a cone and feeds within it (UKMoths). The larva makes a relatively long, lower surface gallery, that widens into a blotch of c. 6 mm long, where all leaf tissue is consumed, leaving only the venation. Later larval stages live free, living in three, successively larger, leaf rolls made of downfolded leaf segments (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 Bladmineeders 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 Bladmineeders van Europa.
The adult is illustrated in UKMoths by Matthias Biere. The genitalia are not illustrated by the Lepidoptera Dissection
Group (check for update).
Hosts in Great Britain & Ireland:
of year - larvae: July-August (British
of year - adults: The adult flies from September and overwinters
in Great Britain & Ireland: A very rare species in Britain,
which has not been recorded reliably since the 1950's where it was
noted in Gloucester. It is also believed to have been present in
Northampton in the 19th century. A number of supposed records elsewhere
are now believed to be misidentifications (UKMoths);
Derbyshire (VC57), and Stafford (NBN
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elsewhere: Widespread in continental Europe including Austria,
Belgium, Czech Republic, Estonia, Finland, French mainland, Germany,
Hungary, Italian mainland, Latvia, Lithuania, Luxembourg, Norwegian
mainland, Poland, Portuguese mainland, Romania, Russia - Central
and South, Slovakia, 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: