Initially makes an oval blotch, between the veins. It then makes
a small fold at the leaf edge; then two cones, formed by curling
the leaf downwards (British
leafminers, as Caloptilia leucapennella).
mine begins as a narrow lower-surface epidermal gallery, that widens
into an oval, eventually full depth blotch between two side veins.
Later the larva lives free, at first in a folded leaf margin, finally
in a partly rolled leaf tip. Possibly a preference for young leaves
(Meyrick, cited by Emmet et al., 1985a) (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).
Body greyish white, head brownish (Bladmineerders van Europa).
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
At the underside of the leaf, in a fold, under a greyish green membrane
(Bladmineerders van Europa).
The adult is not illustrated in UKMoths (check for update). The male
genitalia are illustrated by the Lepidoptera Dissection Group as
Hosts in Great Britain & Ireland:
of year - larvae: June - September (British
leafminers, as Caloptilia leucapennella)
of year - adults: Currently unknown.
in Great Britain & Ireland: Britain including Caernarvonshire (VC49),
Denbighshire (VC50), Dorset (VC9), East Cornwall (VC2), East Ross (VC106), East Suffolk (VC25), Glamorganshire (VC41),
South Aberdeenshire (VC92), South Wiltshire (VC8), West Cornwall (VC1) and West Ross (NBN
Gateway, as Caloptilia leucapennella) the Channel Is. (Karsholt and van Nieukerken in Fauna Europaea).
in oak woodland. Very rare (British
recorded in the Republic of Ireland and Northern Ireland (Karsholt and van Nieukerken in Fauna Europaea).
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elsewhere: Widespread in continental Europe including Austria,
Balearic Is., Belgium, Czech Republic, Danish mainland, Estonia,
Finland, French mainland, Germany, Greek mainland, Hungary, Italian
mainland, Latvia, Luxembourg, Norwegian mainland, Poland, Portuguese
mainland, Russia - Central and South, Sardinia, Sicily, Spanish
mainland, Sweden, Switzerland, The Netherlands and Ukraine. Also
recorded in Near East (Karsholt and van Nieukerken in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: