forming large blotch mine (Spencer, 1972b: 32 (fig. 87), 35). Spencer's (1963a) description of the
mine is rather succinct: "beginning with a narrow channel,
then developing into a distinctive blotch, filled centrally with
blackish frass; the mine does not occupy the entire leaf."
In the figure he adds the initial corridor follows the leaf margin.
Robbins (1991), without mentioning
a source, adds that the mine resembles that of A.
pseudorufipes, and that pupation is outside the mine (Bladmineerders van Europa).
mine is also illustrated in the Encyclopedia of Life.
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 & Ireland:
of year - mines: July.
of year - adults: June, September.
in Great Britain & Ireland: England including Hereford (Tarrington
and Woolhope) and Cambridge (Chippenham Fen and Kirtling) (Spencer, 1972b: 35); ge (Chippenham Fen and Kirtling) (Spencer, 1972b: 35) and Oxford (NBN
Gateway). Northants (Yardley) (British
leafminers); East Gloucestershire (VC33), Oxfordshire (VC23) and Worcestershire (VC37) (NBN
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elsewhere: Widespread in continental Europe including Romania
(Spencer, 1990), Belgium
Bruyn and von Tschirnhaus, 1999), Austria, French mainland
and Poland (Martinez in Fauna Europaea).
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British and Irish Parasitoids in Britain and elsewhere: