linear, frequently adjoining mid-rib (Spencer, 1972b: 73).
corridor; the start may be lower-surface. Pupation outside the mine
(Bladmineerders van Europa).
Larva: The larvae of flies are leg-less maggots without a head capsule (see examples). They never have thoracic or abdominal legs. They do not have chewing mouthparts, although they do have a characteristic cephalo-pharyngeal skeleton (see examples), usually visible internally through the body wall.
Puparium: The puparia of flies are formed within the hardened last larval skin or puparium and as a result sheaths enclosing head appendages, wings and legs are not visible externally (see examples).
(de Meijere, 1934a) (Bladmineerders van Europa).
Hosts in Great Britain & Ireland:
of year - mines: October.
of year - adults: Currently unknown.
in Great Britain & Ireland: Widespread in Britain including
Middlesex (Scratch Wood), Westmorland (Grasmere), Perth (Killin)
(Spencer, 1972b: 73) and
Warwickshire (Alvecote) (Robbins,
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elsewhere: Europe (Spencer,
1990: 305) including The Netherlands (Bladmineerders van Europa), French mainland, Germany, Lithuania and Poland
(Martinez in Fauna Europaea).
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British and Irish Parasitoids in Britain and elsewhere: