Small lower-surface tentiform mine, c. 15 mm long. Most mines lie
close to the leaf margin or in a leaf lobe, and are almost covered
then by the leaf margin that is folded over them. Lower epidermis
with many, very fine, folds. Pupa in the mine in a large, flimsy
cocoon in a corner of the mine, attached only to the roof of the
mine; most frass heaped in the opposite corner (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).
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
The cremaster with two pairs of short, broad spines. Those
of the outer pair are curved outwards, those of the inner pair are
somewhat smaller and bent inwards. The pupa differs from the one
of Phyllonorycter heegeriella by the frontal appendage (the triangular nose at the front/upper
side) that has a warty surface. Described by Gregor and Patocka (2001a), Patocka and Turcani
(2005a) (Bladmineerders van Europa).
The adult is illustrated in UKMoths. The male
genitalia, but not the female genitalia (check for update), are illustrated by the Lepidoptera Dissection Group.
Hosts in Great Britain & Ireland:
of year - larvae:
July and September-October (Bladmineerders van Europa).
of year - adults: Currently unknown.
in Great Britain & Ireland: Britain including Bedfordshire (VC30),
Denbighshire (VC50), East Norfolk (VC27), West Norfolk (VC28), West Suffolk (VC26) and Worcestershire (VC37) (NBN
Gateway). See also British
leafminers distribution map.
NBN Grid Map:
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elsewhere: Widespread in continental Europe including Albania,
Belarus, Belgium, Czech Republic, French mainland, Germany, Hungary,
Italian mainland, Macedonia, Poland, Portuguese mainland, Romania,
Russia - Central and South, Slovakia, Spanish mainland, 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: Currently unknown.