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Leaf-mine:
The larvae mine the leaves creating a long, meandering gallery
containing narrow blackish frass. In later instars, the larva feeds
externally (UKMoths).
The mine is also illustrated in British
leafminers and Nederlandse
bladmineerders.
Larva:
The larva is illustrated in UKMoths.
Pupa:
Details
unknown.
Hosts
in Britain:
Hosts
elsewhere:
Time
of year - mines: January - April and July (British
leafminers).
Time
of year - adults: Two generations, flying in April and May and
again in August (UKMoths).
Distribution
in Britain: Widely distributed over much of the British Isles
(UKMoths),
including Lancaster (Greater Manchester, St. Helens (British
leafminers) and Littleborough (UKMoths),
Derby, East Cornwall, Kincardine, North Hants, Salop, South Aberdeen,
South Hants, South Lancaster, South Wilts, Stafford, Warwick, West
Cornwall, Worcester (NBN
Gateway distribution map - BRERC,
NE,
NESBRC
and SHWRG)
and Northern Ireland (Karsholt & van Nieukerken in Fauna
Europaea). See also British
leafminers distribution map.
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,
Luxembourg, Macedonia, Norwegian mainland, Poland, Romania, Russia
- Central, East and Northwest, Sardinia, ? Sicily, Slovakia, Spanish
mainland, Sweden, Switzerland, The Netherlands, Ukraine and Yugoslavia
(Karsholt & van Nieukerken in Fauna
Europaea).
Parasitoids:
Unknown.
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