Agromyza
luctuosa Meigen, 1830. Syst. Beschr. 6: 182
Dizygomyza effusi Karl, 1926. Stettin ent. Ztg.
87: 136
Cerodontha (Dizygomyza) luctuosa (Meigen, 1830); Nowakowski,
1962. Annls zool., Warsz. 20: 135
Cerodontha (Dizygomyza) luctuosa (Meigen, 1830); Nowakowski,
1967. Polskie Pismo ent. 37: 640
Cerodontha (Dizygomyza) luctuosa (Meigen, 1830); Nowakowski,
1972. Polskie Pismo ent. 42(4): 757
Cerodontha (Dizygomyza) luctuosa (Meigen, 1830); Spencer, 1972b. Handbk
ident. Br. Ins. 10(5g): 101
Cerodontha (Dizygomyza) luctuosa (Meigen, 1830); Spencer,
1976. Fauna ent. Scand. 5(1): 214-7, figs 370-4.
Cerodontha (Dizygomyza) luctuosa (Meigen, 1830); Spencer,
1990. Host specialization in the world Agromyzidae (Diptera)
: 331, 345, 346 (figs 1304-6), 351.
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Leaf-miner: Elongated,
mainly interparenchymal mine in the part of the stem above the flower
stalk. Frass in one large mass. Pupation internal (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 (1934)
and Nowakowski (1973). Posterior spiracles with 3 clawlike bulbs. Also de Meijere (1928a, 1934a, 1941a, 1950a) discussed and described the larva (partly as als effusi) but part of his material comes from Carex hirta and refers to Cerodontha hirtae Nowakowski.
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 early generation puparium is pale yellowish, that of the overwintering
generation darker, reddish brown (Spencer,
1976: 216, 215 (fig. 373)).
Hosts in Great Britain and Ireland:
Hosts
elsewhere:
Time
of year - mines:
June to September; hibernation as puparium in the mine (Bladmineerders van Europa).
Time
of year - adults: June-September.
Distribution
in Great Britain and Ireland: Widespread in Britain including Hampshire
(New Forest), Somerset (Radstock), Cambridgeshire (Chippenham Fen),
Chester (Rostherme). Merionethshire (Barmouth), Aberdeenhire (Balmoral
Forest), Banff (Falls of Tarnash and Glen of Drumloch) (Spencer, 1972b: 101), Warwickshire (Coleshill and Bedworth) (Robbins,
1991: 127); Caernarvonshire, Cambridgeshire, Denbighshire, East Cornwall, East Kent, East Suffolk, Easterness, Glamorgan, Merionethshire, Middlesex, North Somerset, Northamptonshire, Shropshire, South Lancashire, South-west Yorkshire and Surrey (NBN
Atlas).
Also
recorded in Ireland (Spencer, 1972b: 101). Distribution
elsewhere: Widespread and frequently common in much of Europe
including Denmark, Finland, Norway, Sweden (Spencer,
1976: 216), The Netherlands (Bladmineerders van Europa), Belgium (de
Bruyn and von Tschirnhaus, 1991), Germany (Spencer,
1976: 554), Austria, Belarus, Czech Republic, French mainland,
Hungary, Italian mainland, Lithuania, Poland, Sicily, Slovakia and
Spanish mainland (Fauna Europaea).
Also
recorded in the U.S.A. and Canada (Spencer,
1969a: 120).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere:
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