Hendel, 1920. Arch. Naturgesch. 84A(7)(1918): 117
Agromyza erythrocephala Hendel, 1920; Hendel, 1931. Fliegen
palaearkt. Reg. 6(2): 115
Agromyza erythrocephala Hendel, 1920; Spencer, 1972b. Handbk
ident. Br. Ins. 10(5g): 31, 40 (fig. 121), 42, 118
erythrocephala Hendel, 1920; Spencer,
1976. Fauna ent. Scand. 5(1): 104-6, figs 158-163.
Agromyza erythrocephala Hendel, 1920; Spencer, 1990. Host
specialization in the world Agromyzidae (Diptera) : 112, 127,
128 (figs 459-60).
forming an elongated stem-gall up to 2 cm in length. Pupation external
(Spencer, 1972b: 42; Spencer,
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.
Larval mandibles with two teeth; the anterior and posterior spiracles
are illustrated by Spencer (1976:
105, figs 161-2).
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).
Dark brown; anterior spiracles each with up to 35 bulbs (Spencer,
1976: 105); posterior spiracles each having up to 40 bulbs (Spencer,
Hosts in Great Britain & Ireland:
of year - galls: July.
of year - adults: Currently unknown.
in Great Britain & Ireland: Huntingdonshire (Woodwalton
Fen) (Spencer, 1972b: 42).
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elsewhere: Widespread in continental Europe including Germany
(Spencer, 1972b: 42), Sweden
(Spencer, 1976: 103), Austria,
Czech Republic, Finland and Poland (Martinez in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.