Leaf-miner: Makes an elongate mine with frass heaped at the start and then dispersed
thoughout. It does not make a silken shelter and so may be seen
in the mine (British
first a gallery, but soon widened to a broad blotch, entirely or
partly running upwards, in the end half as wide as the leaf. The
mine is widened without consideration for the length veins, making
the mine less sharply delineated than in C.
scribaiella . Most frass in the first section, but higher
up still some scattered frass visible. Unlike C.
scribaiella the larva does not spin a shelter for retreat
in the mine; this makes the larva easily visible in the unopened
mine. Cocoon in the top section of the mine. The pupa lies head-upwards,
just below an opening that has been prepared as an exit for the
later moth (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 by Alan Drewitt. The genitalia are not illustrated by the Lepidoptera
Dissection Group (check for update).
Hosts in Great Britain & Ireland:
of year - larvae: September-April (British
of year - adults: Currently unknown.
in Great Britain & Ireland: Britain including Cambridgeshire (VC29),
East Kent (VC15), East Suffolk (VC25), Huntingdonshire (VC31), Isle of Wight (VC10), North Essex (VC19),
North Hampshire and South Essex (NBN
Gateway). See also British
leafminers distribution map.
in large reed beds in fresh and brackish water. found in Southern
England and Norfolk and Suffolk (British
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,
Belarus, Belgium, Bulgaria, Czech Republic, Danish mainland, Estonia,
Finland, French mainland, Germany, Greek mainland, Hungary, Latvia,
Lithuania, Norwegian mainland, Poland, Spanish mainland, 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.