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Leaf-mine:
A gallery with frass partly dispersed, but sometimes in a thin
line (as S. alnetella).
The moths must be bred through to distinguish between this and S.alnetella
(British
leafminers).
Oviposition
at the leaf underside. Then a full depth, fairly slender corridor,
often several in a leaf. Frass line very variable, sometimes coiled,
mostly more than on third of the width of the corridor. Pupation
outside the mine (Bladmineerders
van Europa).
Larva:
Yellow,
with a grey-brown patch on the prosternum (Johansson et al., 1990a).
The larva mines venter-upwards (Emmet, 1983a). Abdominal segment
1 ventrally not spinulose (Johansson et al., 1990a) (Bladmineerders
van Europa).
Pupa:
Details unknown.
Adult:
Not included in UKMoths (check
for update). The genitalia are not illustrated by the Lepidoptera
Dissection Group (check
for update).
Hosts
in Britain:
Hosts
elsewhere:
Time
of year - larvae: July, September - October (British
leafminers).
Time
of year - adults: Unknown.
Distribution
in Great Britain & Ireland: British Is. (Karsholt &
van Nieukerken in Fauna
Europaea) including East Cornwall, East Kent, East Perth, Hereford,
Isle of Wight, Middlesex, North Essex, North Hants, South Aberdeen,
South Hants, South Wilts, Stirling, West Gloucester and Worcester
(NBN
Gateway distribution map - GiGL,
NE,
NESBRC
and SNH). See
also British
leafminers distribution map.
Also
recorded in the Republic of Ireland (Karsholt & van Nieukerken
in Fauna
Europaea).
NBN
Grid map:
Distribution
elsewhere: Widespread in Europe including Austria, Belgium,
Corsica, Croatia, Czech Republic, Danish mainland, Estonia, Finland,
French mainland, Germany, Hungary, Italian mainland, Latvia, Lithuania,
Norwegian mainland, Poland, Portuguese mainland, Romania, Russia
- Central, Sardinia, Slovakia, Slovenia, Sweden, Switzerland, The
Netherlands, Ukraine and Yugoslavia (Karsholt & van Nieukerken
in Fauna
Europaea).
NBN
interactive distribution maps of known host species in Britain and
elsewhere:
Parasitoids
in Britain and elsewhere:
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