and case-bearer: Composite leaf case. The material used to enlarge the case consists
of large pieces of full depth mine, that are attached with such
precision that they may seem seemless. In the course of summer an
autumn two (sometimes three, according to Hering, 1927b) pieces
are added. No more material is added after hibernation, causing
the case in spring to be rather uniformly coloured (contrary to C. binderella, that does add an extension in spring, and
is made of fresh leaf material) (Bladmineerders van Europa).
The final case is brown and is tubular with slight dorsal and ventral keels (as shown). The case is made from two leaves, with the intial leaf turning grey and the newer leaf brown (British
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).
Four pairs of abdominal prolegs (Sich, 1904a) (Bladmineerders van Europa).
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
The adult is not illustrated in UKMoths (check for update). The male
genitalia are illustrated by the Lepidoptera Dissection Group.
Hosts in Great Britain & Ireland:
of year - larvae:
Mid August; larvae are full grown by the end of October. Pupation
only after thibernation (Bladmineerders van Europa).
of year - adults: Currently unknown.
in Great Britain & Ireland: Britain including Bedfordshire (VC30),
Caernarvonshire (VC49), Cheshire (VC58), East Suffolk (VC25), East Sussex (VC14), Huntingdonshire (VC31),
Merionethshire (VC48), North Aberdeenshire (VC93), North Essex (VC19), Shropshire (VC40), South Aberdeenshire (VC92),
South Hampshire (VC11), South Lancashire (VC59), South-west Yorkshire (VC63), Staffordshire (VC39),
Surrey (VC17), Warwickshire (VC38), West Kent (VC16) and Worcestershire (VC37) (NBN
recorded in 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 Austria,
Belgium, Czech Republic, Danish mainland, Estonia, Finland, French
mainland, Germany, Hungary, Italian mainland, Latvia, Lithuania,
Norwegian mainland, Poland, Russia - 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.