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Leaf-mine:
The larvae of this species feed on oak, forming a pear-shaped
silken case, initially on the underside of a leaf, moving its case
to an angle of twigs to over-winter (UKMoths).
First case formed of silk, larva mining leaves. Feeding in spring
in a new case on catkins and also mining leaves. Very similar to
case of C. flavipennella
(British
leafminers).
Larva:
Details
unknown.
Pupa:
Details unknown.
Hosts
in Britain:
Hosts
elsewhere:
Time
of year - mines: Late September to late October, then April
to early June (British
leafminers).
Time
of year - adults: The adult moths emerge in a single generation
in July and August, and are attracted to light, often flying some
distance from the host plant (UKMoths).
Distribution
in Britain: The moth is thought to be common in England, Wales
and southern Scotland (UKMoths)
including Bedford, East Cornwall, East Kent, Hunts, Middlesex, North
Essex, North Hants, North Lincoln, North Somerset, Salop, South
Lancaster, South Lincoln, Surrey and West Lancaster (NBN
Gateway distribution map - BRERC,
GiGL, JNCC,
NE
and SHWRG).
Also
recorded in the Republic of Ireland (Karsholt & van Nieukerken
in Fauna
Europaea).
Distribution
elsewhere: Widespread in Europe including Albania, Austria,
Belgium, Bulgaria, Croatia, Czech Republic, Danish mainland, Estonia,
Finland, French mainland, Germany, Greek mainland, Hungary, Italian
mainland, Latvia, Lithuania, Macedonia, Norwegian mainland, Poland,
Portuguese mainland, Romania, Russia - Central, Slovakia, Slovenia,
Spanish mainland, Sweden, Switzerland and The Netherlands. Also
recorded in Near East (Karsholt & van Nieukerken in Fauna
Europaea).
Parasitoids:
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