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Leaf-mine: The larva makes a gallery by a vein or along the midrib and feeding
branches can be seen emanating from this (British
leafminers).
Broad
full depth corridor overlying the main veins, with broad lobe-like,
transparent, extensions into the blade. The corridor itself is quite
opaque, white, later brown. The corridors, but not the extensions,
are covered with silk at their inside. Almost all frass is ejected
from the mine; grains may be seen trapped in silk below the mine.
The larva rests lengthwise upon a vein and is very inconspicuous
then. Pupation outside the mine (Bladmineerders
van Europa).
Larva:
The larva is illustrated in British
leafminers and Bladmineerders
van Europa.
Pupa:
Pupation in detritus on the ground. The larva hibernates in its cocoon
before it pupates (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: July - September (British
leafminers).
Time
of year - adults: Unknown.
Distribution
in Great Britain and Ireland: Britain including Bedfordshire,
Cambridgeshire, East Norfolk, East Suffolk, Middlesex, North Essex,
Stafford, Surrey, West Kent, West Norfolk and West Suffolk (NBN
Gateway - N.B. includes Watsonian Vice Counties having publicly available records
that fall within or overlap the vice county border at 10km resolution
or better i.e. a record for a vice county may relate to an adjacent vice county - for included datasets see NBN Grid map below). See also British
leafminers distribution map.
NBN Grid map: Note that not all datasets on the NBN Gateway may be available on the map below. If you are an NBN Gateway registered user you can request access for missing datasets via the link 'Open interactive map in new window' below.
Distribution
elsewhere: Widespread in continental Europe including Austria,
Belarus, Belgium, Bulgaria, Croatia, Czech Republic, Danish mainland,
Estonia, French mainland, Germany, Hungary, Italian mainland, Latvia,
Republic of Moldova, Poland, Portuguese mainland, Romania, Slovakia,
Spanish mainland, Sweden, Switzerland, The Netherlands, Ukraine
and Yugoslavia (Karsholt and van Nieukerken in Fauna
Europaea).
NBN
interactive distribution map(s) of known host species in Great Britain
and Ireland and elsewhere:
Parasitoids
in Britain and elsewhere: Unknown.
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