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(Coleoptera, Diptera, Hymenoptera and Lepidoptera)
by
Brian Pitkin, Willem Ellis, Colin Plant and Rob Edmunds
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Chromatomyia
milii (Kaltenbach, 1864) [Diptera:
Agromyzidae]
Phytomyza
milii Kaltenbach, 1864. Verh. naturh. Ver. preuss. Rheinl.
21: 248
Phytomyza milii Kaltenbach, 1864; Hendel, 1935. Fliegen
palaearkt. Reg. 6(2): 431
Phytomyza intermedia Spencer, 1957a. Ent. Gaz. 8:
21-2
Phytomyza milii Kaltenbach, 1864; Griffiths, 1964. Ent.
Meddr. 32: 405
Phytomyza milii Kaltenbach, 1864; Spencer, 1972b. Handbk
ident. Br. Ins. 10(5g): 92, 93 (figs 322-3) 94, 95
Phytomyza milii Kaltenbach, 1864; Spencer, 1976. Fauna
ent. Scand. 5(1): 447-9, figs 762-9.
Chromatomyia milii (Kaltenbach, 1864); Spencer, 1990. Host
specialization in the World Agromyzidae (Diptera) : 356, 377,
378 (figs 1431-2), 405.
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Leaf-miner: A substantial linear mine. Pupation internal; posterior spiracles
projecting through the epidermis (Spencer,
1976: 449).
Elongated,
shallow, upper-surface or lower-surface blotch, not infrequently
several in one leaf. Frass in strings or pearl chains. Pupation
within the mine (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 (1926),
Dempewolf (2001: 204) and
illustrated in 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).
Posterior spiracles elongated (Spencer, 1972b: 95). The bifid anterior spiracles of the puparium penetrate
the epidermis; the posterior spiracula are dagger-shaped, elongated
and curved, and are anchored in the leaf tissue (Bladmineerders van Europa)
Hosts in Great Britain and Ireland:
Poaceae |
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Hierochloe |
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Spencer, 1972b: 123 |
Holcus |
mollis
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Creeping
Soft-grass |
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Rotheray,
1987 |
Hordeum |
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Spencer, 1972b: 95, 124 |
Hordeum |
vulgare
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Six-rowed
Barley |
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Spencer, 1972b: 124 |
Milium |
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Robbins,
1991: 141 |
Milium |
effusum
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Wood
Millet |
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Mines
in BMNH |
Milium |
effusum
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Wood
Millet |
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Spencer, 1972b: 95, 124 |
Poa |
annua
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Annual Meadow-grass |
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Spencer, 1972b: 124 |
Poa |
trivialis
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Rough
Meadow-grass |
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Spencer, 1972b: 124 |
Hosts
elsewhere:
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