Agromyza
similis
Brischke, 1880. Schr. naturf. Ges. Danzig 5: 258
Phytagromyza centaureana Hering, 1925b. Zeitschrift
für Morphologie und Ökologie der Tiere. [A] 4:
522
Agromyza similis Brischke, 1880; Hendel, 1932. Fliegen
palaearkt. Reg. 6(2): 291
Paraphytomyza similis (Brischke, 1880); Spencer, 1972b. Handbk
ident. Br. Ins. 10(5g): 65
Paraphytomyza similis (Brischke, 1880); Spencer, 1976.
Fauna ent. Scand. 5(1): 322-3, figs 582-3.
Paraphytomyza similis (Brischke, 1880); Spencer, 1990.
Host specialization in the world Agromyzidae (Diptera)
: 243 (fig. 917), 244.
Aulagromyza similis (Brischke, 1880)
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Leaf-miner: A
long, whitish linear-blotch mine, frequently associated with the
mid-rib (Spencer, 1976: 321
(fig. 583), 323).
Unusually
long (up to 16 cm), upper-surface, whitish corridor. Often the corridor
crosses itself so repeatedly that a secondary blotch develops. Sometimes
a few small grains of frass in the initial part of the mine. Otherwise
the mine is either completely free from frass, or a few big lumps
are deposited at the very end of the corridor. Pupation outside
the mine (Bladmineerders van Europa).
The
mine is illustrated in the Encyclopedia
of Life.
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 larvae lie on their sides within the mine and use their pick-like mouthparts to feed on plant tissue.
Posterior spiraclesd with c. 30 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).
Reddish; posterior spiracles on large conical projections, each
with up to 24 irregular bulbs extending upwards (Spencer,
1976: 323). The puparium is illustrated in the Encyclopedia
of Life.
Hosts in Great Britain and Ireland:
Host
plants elsewhere:
Time
of year - mines: June-August.
Time
of year - adults: Currently unknown.
Distribution
in Great Britain and Ireland: Widespread in southern Britain
including Surrey (Box Hill and Coulsdon), Gloucester. (Kilcot),
Denbighshire (Cefn-y-bedd) (Spencer, 1972b: 65); Warwickshire (Harbury) (Robbins,
1991: 108); North Somerset and Surrey (NBN
Atlas).
Also
recorded in the Republic of Ireland: Co. Clare (Spencer, 1972b: 65). Distribution
elsewhere: Widespread in much of Europe including Finland, Norway,
Sweden, probably Denmark (Spencer,
1976: 322-3), Germany (Spencer,
1976: 566), Austria, Belarus, Czech Republic, French mainland,
Hungary, Italian mainland, Lithuania, Poland and Romania (Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.
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