Samara-miner: In wing of samara, mines into the seed with a short gallery (British
leafminers).
The
egg of the first generation is deposited on the wing of a key. The
larva makes a short, superficial corridor (sometimes only the egg
is visible), leading towards the seed, that finally is eaten out.
Infested samaras are prematurely shed, and should be sought on the
ground. The larva of the second generation makes a short mine in
the bark of a petiole, and from there penetrates a bud that is consumed
from the inside out (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).
Adult:
The adult is illustrated in UKMoths. The species is included in mothdissection.co.uk.
Comments: Records of Ectoedemia sericopeza on Field Maple (Acer campestre) require confirmation.
Hosts in Great Britain and Ireland:
Hosts
elsewhere:
Time
of year - larvae: June, September - May (British
leafminers).
Time
of year - adults: Currently unknown.
Distribution
in Great Britain and Ireland: Widespread in England including
East Suffolk, Middlesex, North Somerset, Shropshire, West Gloucestershire, West Lancashire and West Suffolk (NBN
Atlas).
See also British
leafminers distribution map.
Distribution
elsewhere: Widespread in continental Europe including Austria,
Belarus, Belgium, Croatia, Czech Republic, Danish mainland, Estonia,
Finland, French mainland, Hungary, Italian mainland, Latvia, Lithuania,
Norwegian mainland, Poland, Romania, Russia - Central, and Northwest,
Slovakia, Slovenia, Sweden, Switzerland, The Netherlands and Ukraine
(Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere:
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