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Leaf-mine:
A
narrow gallery, often following the midrib, occasionally tinged
red at the edges. This leads to a yellowish blotch containing dispersed
frass (British
leafminers).
The
oval, iridescent egg is deposited at the upperside of the leaf,
mostly close to the midrib. Here starts a gallery, at first narrow
and hardly widening, the first cm not always full depth, often making
a few loops around the egg and/or running along the midrib for some
distance. Parts of the leaf cut off by a corridor loop often turn
red. Frass in small, grey grains, dispersed, not glued to floor
or ceiling of the mine. Later the larva makes a full depth blotch;
mostly in continuation to the corridor, but the larva can also leave
the mine and restart elsewhere, which may happen already at this
stage. A new mine begins with a hole where tha larva has gained
entrance, end ends in an untidy exit. The larva lies venter-upwards
in the mine. Pupation external (Bladmineerders
van Europa).
The
mine is also described and illustrated in UKMoths.
Larva:
The larva is described and illustrated in Bladmineerders
van Europa.
Pupa:
On the ground amongst detritus (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: June - July, September (British
leafminers).
Time
of year - adults: Two generations in the year, flying during
May and again in August (UKMoths).
Distribution
in Great Britain & Ireland: Occurs over much of mainland
Britain (UKMoths),
including Banff , Cambridge, Dunbarton, East Cornwall, East Kent,
East Ross, East Suffolk, Easterness, Edinburgh, Elgin, Fife, Forfar,
Hereford, Kincardine, Lanark, Linlithgow, Main Argyll, Mid Perth,
Mid-west York, Middlesex, North Aberdeen, North Devon, North Essex,
North Hants, North-east York, North-west York, South Aberdeen, South
Devon, South Essex, South Hants, South Lancaster, Stirling, Surrey,
Warwick, West Gloucester, West Kent, West Perth, West Suffolk, Worcester
(NBN
Gateway distribution map - BRERC,
GiGL, HBRG,
JNCC, LWIC,
NE,
NESBRC,
SNH and SHWRG)
and Northern Ireland (Karsholt & van Nieukerken in Fauna
Europaea). See also British
leafminers distribution map.
Also
recorded the Republic of Ireland (Karsholt & van Nieukerken
in Fauna
Europaea).
NBN
Grid map:
Distribution
elsewhere: Widespread in Europe including Austria, Belarus,
Belgium, Czech Republic, Danish mainland, Estonia, Finland, French
mainland, Germany, Hungary, Italian mainland, Latvia, Lithuania,
Luxembourg, Norwegian mainland, Poland, Romania, Russia - Central,
East, North and Northwest, 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:
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