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Leaf-mine:
Initially in short gallery becoming a brownish blotch near the leaf
margin. Later in two or three Parornix-like folds at the
edge of the leaf (British
leafminers).
Small
(up to 10 mm long), lower-surface blotch near the leaf margin, with
a brownish lower epidermis. The mine in fact is a tentiform mine,
but so little silk is produced that the blotch hardly contracts
at all. The mine is preceded by a quite short corridor, that is
overrun by the later blotch. The older larva leaves its mine and
starts feeding under a flap of the leaf margin that is folded down
and fixed with silk on the blade underside. Two or three such folds
are made, not necessarily on the same leaf. The fact that no leaf
rolls are made, but parts of the leaf are folded down rather makes
one think of the work of a Parornix (Bladmineerders
van Europa).
Larva:
Whitish with pale brown head (Bladmineerders van Europa).
Pupa:
Under a turned over leaf edge (British
leafminers).
Adult:
Not illustrated in UKMoths (check
for update). The male
genitalia, but not the female genitalia (check
for update), are illustrated by the Lepidoptera Dissection Group.
Hosts
in Britain:
Hosts
elsewhere:
Time
of year - larvae: July - August (British
leafminers).
Time
of year - adults: Unknown.
Distribution
in Great Britain & Ireland: British Is. including Hants
(Fleet, Portsmouth and Emsworth) (British
leafminers), Dunbarton, Hereford, South Hants, Stirling, Surrey
and West Kent (NBN
Gateway distribution map - NE
and SNH). See
also British
leafminers distribution map.
Also
recorded in the Republic of Ireland (Karsholt & van Nieukerken
in Fauna
Europaea).
NBN Grid map:
Distribution
elsewhere: Widespread in Europe including Austria, Belgium,
Croatia, Cyprus, Czech Republic, Danish mainland, Estonia, Finland,
French mainland, Germany, Hungary, Italian mainland, Latvia, Lithuania,
Luxembourg, Norwegian mainland, Poland, Portuguese mainland, Romania,
Russia - Central, Northwest and South, Sardinia, Slovakia, Sweden,
Switzerland, The Netherlands and Ukraine (Karsholt & van Nieukerken
in Fauna
Europaea).
NBN interactive distribution maps of known host species in Britain and elsewhere: Parasitoids in Britain and elsewhere: Unknown.
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