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Leaf-mine:
Larva mining leaves, the blotches brownish. The final case is 8-11mm
long, slender, and fixed at 45° to leaf surface, with anal end
laterally compressed. The case has a serrated keel due to formation
from the edge of a leaf (British
leafminers).
Larva:
The larva is illustrated in Nederlandse
bladmineerders.
Pupa:
Details unknown.
Hosts
in Britain:
Hosts
elsewhere:
Time
of year - mines: August to September, with some larvae developing
more slowly, and feeding again in April and May (British
leafminers).
Time
of year - adults: Unknown.
Distribution
in Britain: British Is. (Karsholt & van Nieukerken in Fauna
Europaea) including East Kent, East Perth, East Ross, Hereford,
Isle of Wight, North Essex, North Hants, South Hants, South Wilts,
South-west York, Surrey, West Gloucester, West Perth and Worcester
(NBN
Gateway distribution map - HBRG,
NE
and SNH).
Also
recorded in the Republic of Ireland (Karsholt & van Nieukerken
in Fauna
Europaea).
Distribution
elsewhere: Widespread in Europe including Austria, Belgium,
Croatia, Czech Republic, Danish mainland, Estonia, Finland, French
mainland, Germany, Hungary, Italian mainland, Latvia, Lithuania,
Macedonia, Norwegian mainland, Poland, Romania, Russia - Central,
North and South, Sardinia, Slovakia, Slovenia, Spanish mainland,
Sweden, Switzerland and The Netherlands. Also recorded in
East Palaearctic and Near East (Karsholt & van Nieukerken in
Fauna
Europaea).
Parasitoids:
Unknown.
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