slender larva mines the leaves, stems and upper rootstock (UKMoths). Oviposiiton at the leaf margin. From here the larva bores into the leaf tissue, and makes a descending mine that contains much brown frass. The larva hibernates in the lowest part of the mine or in a cavity gnawn in the rootstock. After the winter it mines again in the, by now, dead leaf or in the stem. Pupation internal (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 UKMoths. Body yellowish brown; all segments bear two greyish brown shields, one behind the other, in fact strongly enlarged and fused pinacula. Head and prothoracic plate shinign light brown, anal plate right brown (Bladmineerders van Europa).
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
The adult is illustrated in UKMoths and the Encyclopedia
of Life. The male
genitalia are illustrated by the Lepidoptera Dissection Group.
Hosts in Great Britain & Ireland:
of year - larvae: September to May (UKMoths).
of year - adults: The adults fly in July and August and are
attracted to light (UKMoths).
in Great Britain & Ireland: Scarce and locally distributed
in marshes, fens and other wet habitats in south and south-east
England, including Dorset and Gloucester, with some records as far
north as Chester and Lancaster (UKMoths);
Bedfordshire (VC30), Berkshire (VC22), Buckinghamshire (VC24), Cambridgeshire (VC29), Derbyshire (VC57),
Dorset (VC9), East Kent (VC15), East Norfolk (VC27), East Suffolk (VC25), East Sussex (VC14), Glamorganshire (VC41),
Herefordshire (VC36), Hertfordshire (VC20), Huntingdonshire (VC31), Isle of Wight (VC10), Middlesex (VC21),
Monmouthshire (VC35), North Essex (VC19), North Somerset (VC6), North Wiltshire (VC7), South Devon (VC3), South Essex (VC18), South Hampshire (VC11), South Wiltshire (VC8), Staffordshire (VC39),
Surrey (VC17), West Gloucestershire (VC34), West Kent (VC16), West Norfolk (VC28), West Suffolk (VC26) and Worcestershire (VC37) (NBN
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elsewhere: Widespread in continental Europe including Austria,
Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Czech Republic,
Danish mainland, Estonia, European Turkey, Finland, French mainland,
Germany, Greek mainland, Hungary, Italian mainland, Latvia, Lithuania,
Luxembourg, Macedonia, Norwegian mainland, Poland, Portuguese mainland,
Romania, Russia - Central, East and South, Sardinia, Slovakia, Spanish
mainland, Sweden, The Netherlands 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: Currently unknown.