(less than 1 cm), full depth blotch, transparent when fresh, starting
at the leaf margin, usually near the leaf tip; frass in scattered
grains. The larva makes an elliptic double sided excision to form
a case. Subsequently, it continues feeding within the case (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 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.
The male genitalia, but not the female genitalia (check for update), are not illustrated by the Lepidoptera Dissection
Group (check for update).
Hosts in Great Britain & Ireland:
of year - larvae:
Mining larvae in June - August or even later (Bladmineerders van Europa).
of year - adults: The moths fly in sunshine, in May and June
in Great Britain & Ireland: Widespread in Britain including
Derbyshire (VC57), Dorset (VC9), East Cornwall (VC2), East Kent (VC15), East Suffolk (VC25), Herefordshire (VC36),
Kincardineshire (VC91), North Aberdeenshire (VC93), North Devon (VC4), North Ebudes (VC104), North Essex (VC19),
North Hampshire (VC12), Shropshire (VC40), South Devon (VC3), South Wiltshire (VC8), Staffordshire (VC39),
West Gloucestershire (VC34), Westmorland (VC69) and Worcestershire (VC37) (NBN
recorded in Northern Ireland and the Republic of Ireland (Karsholt
and van Nieukerken in Fauna Europaea). See also Ireland's NBDC interactive map.
NBN Grid Map:
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elsewhere: Widespread in continental Europe including Albania,
Austria, Belgium, Czech Republic, Danish mainland, Estonia, Finland,
French mainland, Germany, Hungary, Italian mainland, Kaliningrad
Region, Latvia, Liechtenstein, Lithuania, Luxembourg, Norwegian
mainland, Poland, Romania, Russia - Central, East and North, Slovakia,
Sweden, Switzerland and The Netherlands (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.