phragmitidis Hendel, 1922. Wien. ent. Ztg. 39:
Agromyza phragmitidis Hendel, 1922; Hendel, 1931. Fliegen
palaearkt. Reg. 6(2): 143
Agromyza phragmitidis Hendel, 1922; Griffiths, 1963b. Tijdschr.
Ent. 106: 143
Agromyza phragmitidis Hendel, 1922; Spencer, 1972b. Handbk
ident. Br. Ins. 10(5g): 38, 124
Agromyza phragmitidis Hendel, 1922; Spencer, 1976. Fauna
ent. Scand. 5(1): 131-2, fig. 229
Agromyza phragmitidis Hendel, 1922; Spencer, 1990. Host
specialization in the world Agromyzidae (Diptera) : 356, 359.
eggs are normally laid together side by side at the tip of the leaf,
the young larvae feeding first towards the apex of the leaf and
then forming a large communal blotch running down the leaf. Pupation
normally external, frequently adhering to the leaf (Spencer,
number of eggs are deposited in a transverse row, not far from the
leaf margin. The larvae that emerge start to make an individual
corridor in the direction of the leaf tip. The corridors quickly
widen and merge into one communal, upper-surface, mine. Frass powdery.
Pupation as a rule 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 somewhat greenish larva is described by Griffiths (1963),
de Meijere (1925) and illustrated in
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).
The puparium is illustrated in Bladmineerders van Europa. It varies in colour from black to almost yellow;
posterior spiracular processes separated by their own diameter,
each with 3 bulbs (Spencer, 1976:
Hosts in Great Britain & Ireland:
of year - mines: August-September.
of year - adults: April-August the following year.
in Great Britain & Ireland: Widespread in Britain (Spencer, 1972b: 38) including Huntingdonshire and Oxford (Robbins,
1991: 141), East Perth (Ardblair Moss), East Lothian (Luffness)
(Bland, 1994c: 81) and Cambridgeshire (VC29),
East Cornwall (VC2), East Norfolk (VC27), West Norfolk (VC28) and West Suffolk (VC26) (NBN
recorded in the Republic of Ireland (Martinez in Fauna Europaea).
Distribution elsewhere: Widespread in continental Europe including Denmark, Finland,
Germany, Hungary, Poland (Spencer,
1976: 132), The Netherlands (Bladmineerders van Europa), Belgium (Scheirs
and de Bruyn, 1992), Czech Republic, Estonia, Hungary, Lithuania,
Poland and Slovakia (Martinez in Fauna Europaea).
recorded in Japan (Spencer, 1990).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: