Leaf-miner: Linear
mine closely winding; the adjoining sections usually forming a secondary
pseudo-blotch; frass variably coloured and in diffuse patches; pupation
internal (Spencer, 1976:
522).
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).
Hosts in Great Britain and Ireland:
Hosts elsewhere:
Time
of year - mines: September-October.
Time
of year - adults: April the following year.
Distribution
in Great Britain and Ireland: Perth (Glen Fender Meadows)
(Bland, Godfray and
Henshaw, 1999: 50). Distribution
elsewhere: Germany (Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere:
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