Leaf-
and stem-mine:
Mine in the lowest part of the petiole, not in the pinnulae-bearing
part of the rachis. Often several larvae together. Mined leaves
are stunted, often incompletely rolled out. Puparium in the mine
or in the ground (Bladmineerders van Europa). See de Meijere (1911a) and Brown and McGavin
(1982) for details of
the biology.
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.
Larva with undivided posterior processes of the cephalopharyngeal
skeleton (Bladmineerders van Europa).
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).
Hosts in Great Britain and Ireland:
Hosts elsewhere:
Time
of year - mines:
June-July (Bladmineerders van Europa).
Time
of year - adults: Currently unknown.
Distribution
in Great Britain and Ireland: Widespread in Britain including
Berkshire, Buckinghamshire, Dorset, East Kent, Glamorgan, North Hampshire, North Somerset, North Wiltshire, Nottinghamshire, Oxfordshire, Pembrokeshire, South Devon,
South-west Yorkshire, Stafford, Surrey, West Suffolk and Worcestershire (NBN
Atlas). Distribution elsewhere: Widespread in continental Europe including The Netherlands (Bladmineerders van Europa), Corsica, ? Czech Republic, Denmark, Finland, French
mainland, Germany, Greek mainland, Italian mainland, Poland, Russia
- Northwest, Sicily, Sweden and Yugoslavia (Michelsen in Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere:
Currently unknown.
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