Leaf-miner: An irregular gallery filled with greenish frass, leading to a circular
or oval blotch with blackish frass arranged in a spiral fashion
(British
leafminers).
The
very first part of the mine is a densely contorted corridor of about
2 mm long, that quickly turns brown. It is followed by a more or
less straight corridor of c. 10 mm, entirely filled with greyish
green frass. This suddenly widens into a round blotch that during
its expansion overruns the earlier corridor and in the end may occupy
half of a Laburnum leaflet. The frass, greenish at first,
black later, is deposited in the bloth in roughly concentric arcs,
glued to the upper epidermis. Pupation external, exit slit in upper
epidermis (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).
The
larva is illustrated in British
leafminers, UKMoths and Bladmineerders van Europa.
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
The larva is described by Patocka (2000a) and Patocka and
Turcani (2005a); rear half of abd. 8 scabrous (difference with L.
genistae) (Bladmineerders van Europa).
The
pupa is also described in British
leafminers and UKMoths.
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: June, July; September (British
leafminers).
Time
of year - adults: Currently unknown.
Distribution
in Great Britain and Ireland: Widely distributed and fairly
commonly throughout much of the British Isles (UKMoths)
including Anglesey, Bedfordshire, Caernarvonshire, Cambridgeshire,
Cardiganshire, Denbighshire, Dorset, Durham, East Cornwall, East Norfolk, East Ross, East Suffolk, Easterness,
Edinburgh, Flintshire, Glamorgan, Haddington, Hertfordshire, Kincardineshire, Leicestershire, Linlithgow, Merionethshire, Middlesex,
North Aberdeenshire, North Devon, North Somerset, Pembrokeshire, Shropshire, South Aberdeenshire, South Northumberland, South Wiltshire, South-east Yorkshire, South-west Yorkshire, Stafford, Surrey,
Warwickshire, West Gloucestershire, West Lancashire, West Norfolk,
West Ross, West Suffolk, Westmorland and Worcestershire (NBN
Atlas). It tends to inhabit suburban areas where Laburnum
is grown in gardens (UKMoths).
See also British
leafminers distribution map.
Also
recorded in the Republic of Ireland and Northern Ireland (Fauna Europaea and National Biodiversity Data Centre Map).
Distribution
elsewhere: Widespread in continental Europe including Austria,
Belarus, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Czech
Republic, Danish mainland, French mainland, Germany, Hungary, Italian
mainland, Luxembourg, Macedonia, Norwegian mainland, Poland, Romania,
Sardinia, Slovakia, Spanish mainland, Sweden, Switzerland, The Netherlands
and Yugoslavia. Also recorded in the Nearctic region (Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere:
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