Leaf-miner: Oviposition by way of an ovipositor, no egg visible therefore.
The larva makes an irregular blotch. The part of the mine nearest
to the oviposition site is more thranslucent than the later, in
transparancy more greenish, part of the mine. The mine usually lies
close to the leaf tip, often several together. After its first moult
the larva makes a roundish excision, 3-4 mm in diameter. Sandwiched
herein it drops to the ground and continues feeding of dead leaves.
The excision occupies about half of the surface of the blotch (Bladmineerders van Europa).
The
mine is also described 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).
Incurvaria-larvae,
while resting, take a horse-shoe like posture, unlike the larvae
of Antispila species (Bladmineerders van Europa).
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 by Andy Mackay.
The species is included in mothdissection.co.uk. The
ovipositor comb of oehlmanniella is illustrated in British
leafminers alongside pectinea and masculella.
Hosts in Great Britain and Ireland:
Hosts
elsewhere:
Time
of year - larvae:
Mining larvae are found in July - August (Bladmineerders van Europa).
Time
of year - adults: The adults fly in June and July (UKMoths).
Distribution
in Great Britain and Ireland: Widespread in much of the Britain
including Anglesey, Banffshire, Breconshire, Buckinghamshire, Caernarvonshire,
Cambridgeshire, Cardiganshire, Carmarthenshire, Cheshire, Cumberland, Denbighshire, Dorset,
Durham, East Cornwall, East Kent, East Suffolk, Easterness,
Elgin, Flintshire, Glamorgan, Haddington, Huntingdonshire, Kirkudbrightshire, Leicestershire, Merionethshire, Middlesex, Montgomeryshire, North Aberdeenshire,
North Ebudes, North Essex, North Hampshire, North Northumberland, North Lincolnshire, North Somerset, North Wiltshire, North-east Yorkshire, Pembrokeshire, Shropshire, South Aberdeenshire, South Somerset, South Wiltshire, South-east Yorkshire,
South-west Yorkshire, Stafford, Stirlingshire, Surrey, West Cornwall, West Gloucestershire, West Kent, West Lancashire,
West Norfolk, West Suffolk, Westmorland and Worcestershire (NBN
Atlas).
Also recorded in the Republic of Ireland (Fauna Europaea). See National Biodiversity Data Centre Map).
Distribution
elsewhere: Widespread in continental Europe including Albania,
Austria, Belgium, Bulgaria, Croatia, Czech Republic, Danish mainland,
Estonia, Finland, French mainland, Germany, Greek mainland, Hungary,
Italian mainland, Kaliningrad Region, Latvia, ? Luxembourg, Norwegian
mainland, Poland, Romania, Russia - Central, East, North, Northwest,
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: Currently unknown.
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