Leaf-miner: Early mines are spiral galleries; later forms pale blotches, sometimes
having moved to a different leaf (British
leafminers).
Egg
at the upperside of the leaf, not near the midrib. The larva starts
by making a long, narrow, full depth corridor that is strongly spiraled
or even lies in intestine-like loops. Frass as fine grains, distributed,
later in a central line. After a while a new mine is made, either
a continuation of the corridor or, more often, in a new leaf. This
new mine begins as a narrow corridor but soon widens into a large
blotch; here the fass lies in a broad band. The larva lies venter-upwards
in the mine. Pupation external (Bladmineerders van Europa).
The
mine is also illustrated in UKMoths.
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).
Whitish; head light brown; prothoracic and anal shield yellowish brown (Koster, 2002b; Koster and Sinev, 2003a) (Bladmineerders van Europa).
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
Pupation in a cocoon, on a leaf or in leaf-litter (British
leafminers). See also See Patočka and Turčáni (2005a) (Bladmineerders van Europa).
Adult:
The adult is illustrated in UKMoths. The species is included in mothdissection.co.uk.
Hosts in Great Britain and Ireland:
Hosts elsewhere:
Time
of year - larvae: August-September (British
leafminers; UKMoths).
Time
of year - adults: A single generation flies in July and August
but is not easy to locate as an adult (UKMoths).
Distribution
in Great Britain and Ireland: A relatively local species occurring
in England and Wales, less common in the eastern counties (UKMoths)
including Breconshire, Buckinghamshire, Carmarthenshire, Cheshire, Dorset, Durham, East Cornwall, East Gloucestershire,
Glamorgan, Herefordshire, Hertfordshire, Huntingdonshire, Isle of Wight, Leicestershire, North Essex, North Hampshire, North Somerset,
Pembrokeshire, Shropshire, South Devon, South Hampshire, South Northumberland, South-west Yorkshire,
Stafford, Surrey, Warwickshire, West Cornwall, West Gloucestershire, West Lancashire, Westmorland and Worcestershire (NBN
Atlas). See also British
leafminers distribution map.
Also
recorded in the Republic of Ireland (Fauna Europaea and National Biodiversity Data Centre Map).
Distribution
elsewhere: Widespread in continental Europe including Austria,
Balearic Is., Belgium, Czech Republic, Danish mainland, Estonia,
Finland, French mainland, Germany, Hungary, Latvia, Lithuania, Poland,
Romania, Slovakia, Spanish mainland, Sweden, Switzerland and The
Netherlands (Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere:
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