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Leaf-mine:
The larva feeds initially in a gallery on the underside of a mugwort
leaf, eventually forming a blotch or blister that becomes inflated
and turns at first yellowish, and later purple (UKMoths).
The mine is also illustrated in British
leafminers and Nederlandse
bladmineerders.
Larva:
The
larva is illustrated in Nederlandse
bladmineerders.
Pupa:
Details
unknown.
Hosts
in Britain:
Hosts
elsewhere:
Time
of year - mines: July, August - September (British
leafminers).
Time
of year - adults: The moths occur in two generations, flying
in May and in August, usually in the late afternoon (UKMoths).
Distribution
in Britain: Distributed mainly in the south and east of England,
this species frequents waste ground and similar habitats where its
foodplant, mugwort (Artemisia vulgaris), is plentiful (UKMoths)
including East Kent, North Hants, South Essex, South Hants, South
Wilts and West Suffolk (NBN
Gateway distribution map - GiGL,
JNCC and NE).
See also British
leafminers distribution map.
Distribution
elsewhere: Widespread in Europe including Austria, Balearic Is.,
Belgium, Bulgaria, Canary Is., Corsica, Czech Republic, Danish mainland,
Estonia, Finland, French mainland, Germany, Hungary, Italian mainland,
Latvia, Poland, Romania, Russia - Central and South, Slovakia, Spanish
mainland, Sweden, Switzerland, The Netherlands,. Also recorded in
East Palaearctic and the Near East (Karsholt & van Nieukerken
in Fauna
Europaea).
Parasitoids:
Unknown.
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