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Leaf-mine:
Early mines are spiral galleries; later forms pale blotches, sometimes
having moved to a different leaf (British
leafminers).
Egg
at the upperside of the leaf, not near the midrib. The larve starts
by making a long, narrow, full depth corridor that is strongly spiraled
or even lies in intestine-like loops. Frass as fine grains, distributed,
later in a central line. After a while a new mine is made, either
a continuation of the corridor or, more often, in a new leaf. This
new mine begins as a narrow corridor but soon widens into a large
blotch; here the fass lies in a broad band. The larva lies venter-upwards
in the mine. Pupation external (Bladmineerders
van Europa).
The
mine is also described and illustrated in UKMoths.
Larva:
Details unknown.
Pupa:
In a cocoon, on a leaf or in leaf-litter (British
leafminers).
Adult:
Not illustrated 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: August-September (British
leafminers; UKMoths).
Time
of year - adults: A single generation flies in July and August
but is not easy to locate as an adult (UKMoths).
Distribution
in Great Britain & Ireland: A relatively local species occurring
in England and Wales, less common in the eastern counties (UKMoths)
including Durham, East Cornwall, East Gloucester, Leicester, North
Essex, North Hants, South Northumberland, South Devon, South-west
York, Warwick and Worcester (NBN
Gateway distribution map - DBRC,
JNCC and NE).
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, Balearic
Is., Belgium, Czech Republic, Danish mainland, Estonia, Finland,
French mainland, Germany, Hungary, Latvia, Lithuania, Poland, Romania,
Slovakia, Spanish mainland, Sweden, Switzerland and The Netherlands
(Karsholt & van Nieukerken in Fauna
Europaea).
NBN
interactive distribution maps of known host species in Britain and
elsewhere:
Parasitoids
in Britain and elsewhere: Unknown.
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