The leaf and stem mines of British flies and other insects
 

(Coleoptera, Diptera, Hymenoptera and Lepidoptera)

by Brian Pitkin, Willem Ellis, Colin Plant and Rob Edmunds

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Phytomyza erigerophila Hering, 1927
[Diptera: Agromyzidae]


Phytomyza erigerophila Hering, 1927c. Z. angew. Ent. 13: 174
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).


Leaf-mine: A 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, 1976: 413).

Comments: Erigeron acer is treated as Erigeron acris (Blue Fleabane) by Stace (2010).

Hosts in Great Britain & Ireland:

Asteraceae        
Erigeron acer Blue Fleabane British Wild Flowers by John Somerville et al. Robbins, 1991: 112-3
Erigeron canadensis Canadian Fleabane British Wild Flowers by John Somerville et al. Robbins, 1991: 112-3

Hosts elsewhere:

Asteraceae        
Aster       Spencer, 1990: 274
Aster amellus European Michaelmas-daisy   Bladmineerders van Europa
Aster novi-belgii Confused Michaelmas-daisy   Bladmineerders van Europa
Conyza canadensis Canadian Fleabane British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Erigeron       Spencer, 1990: 274
Erigeron       Spencer, 1976: 413
Erigeron acer Blue Fleabane British Wild Flowers by John Somerville et al.

Bladmineerders van Europa, as Erigeron acris

Erigeron annuus Tall Fleabane   Bladmineerders van Europa
Hieracium       Bladmineerders van Europa

Time of year - mines: June-July and September (Hering, 1957).

Time of year - adults: Currently unknown.

Distribution 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 Atlas).

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 Atlas links to known host species:

Aster amellus, Aster tripolium, Erigeron acer (= Erigeron acris), Erigeron canadensis

British and Irish Parasitoids in Britain and elsewhere: Currently unknown.



External links: Search the internet:
Biodiversity Heritage Library
Bladmineerders van Europa
British leafminers
Encyclopedia of Life
Fauna Europaea
NBN Atlas
NHM UK Checklist
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