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Leaf-mine:
A long thin linear gallery with frass in a thin line, sometimes
broken. This distinguishes it form S.nylandriella,
which never has linear frass throughout the mine. The gallery of
S.magadalenae is also narrower than S.nylandriella.
S. magdalenae can both be an edge miner or make a small mine
in the leaf blade, or run along a vein (British
leafminers).
Larva:
The larva is green (British
leafminers).
Pupa:
Details unknown.
Hosts
in Britain:
Hosts
elsewhere:
Time
of year - mines: July - August (British
leafminers).
Time
of year - adults: Unknown.
Distribution
in Britain: British Is. (Karsholt & van Nieukerken in Fauna
Europaea). Widespread in England, Wales, Scotland and Northen
Ireland. See also British
leafminers distribution map.
Also
recorded in the Republic of Ireland (Karsholt & van Nieukerken
in Fauna
Europaea; British
leafminers distribution map).
Distribution
elsewhere: Widespread in Europe including Austria, Bulgaria,
Czech Republic, Danish mainland, Estonia, Finland, French mainland,
Germany, Hungary, Italian mainland, Latvia, Lithuania, Norwegian
mainland, Poland, Russia Central, Russia Northwest, Slovakia, Slovenia,
Sweden, Switzerland, The Netherlands and Ukraine (Karsholt &
van Nieukerken in Fauna
Europaea).
Parasitoids:
Unknown.
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