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Leaf-mine:
The highly distinctive, violet or purplish spiral mines of this
species are often the key to its discovery. They can be found on
leaves, often several to a leaf. After the initial leaf-mining phase,
the larva feeds externally on the underside of the leaves, creating
small feeding windows, before pupating in a ribbed cocoon typical
of the Bucculatriginae (UKMoths).
The leaf-mine is illustrated in British
leafminers and Nederlandse
bladmineerders.
Larva:
The larva is illustrated in British
leafminers.
Pupa:
The
cocoon is illustrated in British
leafminers.
Hosts
in Britain:
Hosts
elsewhere:
Time
of year - mines: August and September (UKMoths).
Time
of year - adults: June and July (UKMoths).
Distribution
in Britain: Mainly in the southern half of England, including
Suffolk (Elveden Forest) (UKMoths),
Hants (Fleet) (British
leafminers), Cambridge, Dorset, North Hants, North Somerset,
South Devon, South Hants, South Wilts and West Suffolk (NBN
Gateway distribution map -
BRERC, JNCC
and NE),
with occasional scattered colonies further north (UKMoths).
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, Hungary, Italian mainland, Kaliningrad Region, Latvia,
Lithuania, Macedonia, Norwegian mainland, Poland, Romania, Russia
- Central and Northwest, Slovakia, Sweden, Switzerland, The Netherlands,
Ukraine and Yugoslavia (Karsholt & van Nieukerken in Fauna
Europaea).
Parasitoids:
Unknown.
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