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Leaf-mine:
Larva
mining initially on lower surface of leaf, later filling the tip
of the leaf on the upper surface with a linear blotch mine (Spencer,
1972: 77).
The
mine starts with a lower-surface, relatively wide corridor. After
its first moult the larva continues upper-surface, its mine in the
end entirely occupying several leaf segmets (Allen, 1956a; Hering,
1957). Frass in rather coarse granules. Pupation outside the mine,
exit slit in upper epidermis (Bladmineerders
van Europa).
Larva:
The larva are described Allen (1957b).
Puparium:
Black; posterior spiracles each with 20 bulbs (Spencer,
1972: 77).
Hosts
in Britain:
Hosts
elsewhere:
Time
of year - mines: July, September-October.
Time
of year - adults: Unknown.
Distribution
in Great Britain & Ireland: Surrey (Egham), Cambridge (Chippenham
Fen) (Spencer, 1972: 77)
and Warwick (Combrook and Ufton Fields) (Robbins,
1991: 65).
NBN
Grid map:
Distribution
elsewhere: Europe (Spencer,
1990) including Germany (Bladmineerders
van Europa) and Poland (Martinez in Fauna
Europaea).
NBN
interactive distribution maps of known host species in Britain and
elsewhere:
Parasitoids
in Britain and elsewhere: .
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