Leaf-miner: Initially a corridor, with hardly recognisable frass; in due course the entire tthallus is eaten out. Pupation within 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).
Comments:
Irwin and Chandler in Chandler
(1978) did not indicate whether their host records were British
or Foreign and are therefore tentatively included under 'Hosts in
Britain' and 'Hosts elsewhere'.
Hosts in Great Britain and Ireland:
Hosts
elsewhere:
Time
of year - mines: August (Hering 1957a).
Time
of year - adults: Currently unknown.
Distribution
in Great Britain and Ireland: Britain including Cambridgeshire,
Cardiganshire, East Kent, East Norfolk, East Suffolk, Glamorgan, Leicestershire, Monmouthshire,
North Somerset, Radnorshire, Shropshire, South-west Yorkshire, West Norfolk and West Suffolk (NBN
Atlas). Distribution
elsewhere: Widespread in continental Europe including Austria,
Belkgium, Czech Republic, Estonia, Finland, French mainland, Germany,
Hungary, Italian mainland, Madeira, Norwegian mainland, Poland,
Sicily, Slovakia, Spanish mainland, Sweden, Switzerland and The
Netherlands (Zatwarnicki, 2004 in Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.
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