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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:
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 Britain:
Hosts
elsewhere:
Time
of year - larvae: July - August (British
leafminers).
Time
of year - adults: Unknown.
Distribution
in Great Britain and Ireland: Britain including Hampshire
(Fleet, Portsmouth and Emsworth) (British
leafminers); Bedfordshire, East Suffolk, Herefordshire, South
Hampshire, Surrey, West Kent and West Suffolk (NBN
Gateway - N.B. includes Watsonian Vice Counties having publicly available records
that fall within or overlap the vice county border at 10km resolution or better i.e. a
record for a vice county may relate to an adjacent vice county - for included datasets see NBN Grid map below).
See also British
leafminers distribution map.
Also
recorded in the Republic of Ireland (Karsholt and van Nieukerken
in Fauna
Europaea).
NBN Grid map: Note that not all datasets on the NBN Gateway may be available on the map below. If you are an NBN Gateway registered user you can request access for missing datasets via the link 'Open interactive map in new window' below.
Distribution
elsewhere: Widespread in continental 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 and
van Nieukerken in Fauna
Europaea).
NBN
interactive distribution map(s) of known host species in Great Britain
and Ireland and elsewhere:
Parasitoids
in Britain and elsewhere: Unknown.
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