bicophaga Hering, 1925. Z. wiss. InsektBiol. 20:
Agromyza bicophaga Hering, 1925; Spencer, 1972b. Handbk
ident. Br. Ins. 10(5g): 40 (fig. 124), 42, 118
Agromyza bicophaga Hering, 1925; Spencer, 1990. Host
specialization in the world Agromyzidae (Diptera) : 112, 127,
129 (figs 461-2).
beginning linear, later becoming a primary blotch (Spencer, 1972b: 42).
blotch, preceded by a corridor that meticulously follows the leaf
margin. Blotch clearly upper-surface, nowhere mined out deeper than
the corridor, and equally transparent. The blotch is not oriented
on the midrib. Frass in the corridor in short streaks along the
sides, in the blotch as small grains that partly may be deliquescent.
Pupation outside 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.
The larva is described by de Meijere (1926a, 1938a) (Bladmineerders van Europa)
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-August.
of year - adults: Currently unknown.
in Great Britain & Ireland: Uncommon. Surrey (Chipstead
- mine only) (Spencer, 1972b:
42); Warwickshire (Foleshill) (Robbins,
1991: 46) and Cambridgeshire (NBN
elsewhere: Widespread in continental Europe including Germany
(Berlin) (Spencer, 1990:
127), The Netherlands (Bladmineerders van Europa), Poland, Sardinia and Sweden (Martinez in Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: