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Leaf-mine:
Larva mines leaves (British
leafminers). The larva builds a case from silk, resembling a
razor shell in appearance. (UKMoths).
The full-grown case is 12mm long and blackish-brown (British
leafminers).
Larva:
Details unknown.
Pupa:
Details unknown.
Hosts
in Britain:
Hosts
elsewhere:
Time
of year - mines: August to October on Thistle, probably full-grown
in autumn. September to October on Knapweed, feeding again from
April until May or June (British
leafminers).
Time
of year - adults: The nocturnal adults fly in July and August
and are attracted to light (UKMoths).
Distribution
in Britain: Occurring throughout most of the British Isles (UKMoths),
including Brecon, Durham, East Cornwall, East Kent, East Perth,
East Sussex, Mid Perth, North Hants, South-west York, Surrey, West
Cornwall, West Kent, West Suffolk (NBN
Gateway distribution map - JNCC,
NE
and SNH) and
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,
Norwegian mainland, Poland, Romania, Russia - Central and North,
Slovakia, Sweden and Switzerland. Also recorded in the East Palaearctic
(Karsholt & van Nieukerken in Fauna
Europaea).
Parasitoids:
Unknown.
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