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
elsewhere: Widespread in continental Europe including Romania
(Spencer, 1990), Belgium
Bruyn and von Tschirnhaus, 1999), Austria, French mainland
and Poland (Martinez in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: