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Leaf-mine:
A narrow gallery with frass in thin central line. The moths
must be bred through to distinguish S.alnetella and S.glutinosae
(British
leafminers).
Larva:
The
larva is a pale yellow laterally and white dorsally with the green
gut visible from above; head pale brown (British
leafminers).
Pupa:
Details unknown.
Hosts
in Britain:
Hosts
elsewhere:
Time
of year - mines: July, September - October (British
leafminers).
Time
of year - adults: Unknown.
Distribution
in Britain: British Is. (Karsholt & van Nieukerken in Fauna
Europaea) including Cheshire, East Perth, Hunts, Kincardine,
North Hants, South Aberdeen, South Lancaster, Stafford and Worcester
(NBN
Gateway distribution map - BRERC,
GiGL, NE,
NESBRC,
SNH and SHWRG).
See also British leafminers distribution map.
Distribution
elsewhere: Widespread in Europe including Austria, Belgium,
Corsica, Croatia, Czech Republic, Danish mainland, Estonia, Finland,
French mainland, Germany, Hungary, Italian mainland, Lithuania,
Norwegian mainland, Poland, Portuguese mainland, Romania, Russia
- East, Sardinia, Slovakia, Slovenia, Spanish mainland, Sweden,
Switzerland, The Netherlands, Ukraine and Yugoslavia (Karsholt &
van Nieukerken in Fauna
Europaea).
Parasitoids:
Unknown.
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