Leaf-miner: Mine
narrow, whitish, linear, normally adjoining margin of leaf; in small
leaves can become blotch-like (Spencer, 1972b: 91 (fig. 305); Spencer,
1976: 427, 429 (fig. 746)).
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.
The larva is described by de Meijere (1926).
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).
Black; posterior spiracles on short conical projections, each with
an irregular ellipse of 18 bulbs (Spencer,
1976: 427).
Hosts in Great Britain and Ireland:
Hosts
elsewhere:
Time
of year - mines: June.
Time
of year - adults: Currently unknown.
Distribution
in Great Britain and Ireland: Local. Somerset (nr Frome) (Spencer, 1972b: 92); East Kent and
Pembrokeshire (NBN
Atlas). Also recorded at Hoad's Wood, Sedlescombe, East Sussex
(British
leafminers). Distribution
elsewhere: Widespread in central and western Europe including
Denmark, Finland, Norway, Sweden (Spencer,
1976: 427), Germany (Bladmineerders van Europa), Czech Republic, Lithuania, Poland and The Netherlands
(Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere:
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