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Leaf-mine:
The larvae mine the blades of various grasses, including meadow-grass
and cock's-foot (UKMoths).
Larva:
Details unknown.
Pupa:
Details unknown.
Hosts
in Britain:
Hosts
elsewhere:
Time
of year - mines: The larval mines can be found from March to
April and in July (UKMoths).
Time
of year - adults: There are two generations, with moths on the
wing from late April to June and again from late July to September
(UKMoths).
Distribution
in Britain: The species is widespread and reasonably common
throughout much of the British Isles except the very far north (UKMoths)
including East Perth, Hunts, North Aberdeen, North Ebudes, North
Hants, Northampton, Stafford (NBN
Gateway distribution map (as Cosmiotes
freyerella
- BRERC,
HBRG, NE,
NESBRC
and SNH) and
Northern Ireland (Karsholt & van Nieukerken in Fauna
Europaea).
Distribution
elsewhere: Austria, Belgium, Corsica, Czech Republic, Danish
mainland, Estonia, Finland, French mainland, Germany, Hungary, Ireland,
Italian mainland, Latvia, Lithuania, Norwegian mainland, Poland,
Romania, Russia - Central and North, Slovakia, Spanish mainland,
Sweden, Switzerland and The Netherlands (Karsholt & van Nieukerken
in Fauna
Europaea).
Parasitoids:
Unknown.
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