erigerophila Hering, 1927
erigerophila Hering, 1927c. Z. angew. Ent. 13:
Phytomyza erigerophila Hering, 1927c; Hendel, 1935. Fliegen
palaearkt. Reg. 6(2): 396
Phytomyza archhieracii Hering, 1927c. Fliegen palaearkt.
Reg. 6(2): 173. [Synonymised by Spencer, 1976: 412]
Phytomyza erigerophila Hering, 1927c; Spencer, 1976. Fauna ent. Scand. 5(1): 412-3, fig. 721.
Phytomyza erigerophila Hering, 1927c; Spencer, 1990. Host
specialization in the World Agromyzidae (Diptera) : 271, 274,
283, 284 (fig. 1084).
narrow upper surface linear branching mine without apparent feeding
lines. Frass in isolated grains and pearl chains. At least in Erigeron
older mines turn reddish-brown. Pupation external (Spencer,
1976: 413; 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 (1928,
as erigerophila, 1937 as asteribia) and Griffiths
(1976c); posterior spiracles
each with 8-11 bulbs (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).
Black; posterior spiracles on short conical projections, each with
an ellipse of about 13 bulbs (Spencer,
Erigeron acer is treated
as Erigeron acris (Blue
Fleabane) by Stace (2010).
Hosts in Great Britain & Ireland:
of year - mines:
June-July and September (Hering,
of year - adults: Currently unknown.
in Great Britain & Ireland: Occurence in Britain first recorded
by Robbins (1989) and confirmed
by Deeming (1995). Warwickshire
(Hartshill and Ladywalk) (Robbins,
1991); Glamorgan (NBN
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Distribution elsewhere: Widespread in continental Europe, including Denmark, Finland,
France, Norway (Spencer, 1976:
413), The Netherlands (Bladmineerders van Europa), Germany (Spencer,
1976: 570), Bulgaria, Corsica, Czech Republic, Lithuania and
Poland (Martinez in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.