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


Phytoliriomyza ornata (Meigen, 1830)
[Diptera: Agromyzidae]

Agromyza ornata Meigen, 1830. Syst. Beschr. 6: 176
Agromyza elegantula Zetterstedt, 1848. Diptera Scandinaviae. 7: 2749
Agromyza limbatella Zetterstedt, 1848. Diptera Scandinaviae. 7: 2755
Liromyza ornata (Meigen, 1830); Hendel, 1920. Archiv für Naturgeschichte [a] 84(7): 139
Liromyza ornata (Meigen, 1830); Hendel, 1931. Fliegen palaearkt. Reg. 6(2): 238
Metopomyza ornata (Meigen, 1830); Spencer, 1976. Fauna ent. Scand. 5(1): 284-6, figs 509-11.
Metopomyza ornata (Meigen, 1830); Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 323, 338, 339 (figs 1278-80), 341, 393
Phytoliriomyza ornata (Meigen, 1830); Chandler, 1998. Handbooks for the Identification of British Insects 12: 138.

Stem-borer: Larva feeding internally in the stems. Pupation internal. (Spencer, 1976: 284). The larva bores in the pith of the thicker parts of the leaves, leaf sheets and flower stalk. The puparium is formed 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.

Dark brown; each spiracular process on a separate projection and each with a regular ellipse of 12 well-defined bulbs (Spencer, 1976: 284). The larva is also described by Dempewolf (2001: 136).

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).

Hosts in Great Britain and Ireland: Currently unknown.

Hosts elsewhere:

Butomus       Spencer, 1990: 341
Butomus umbellatus Flowering-rush British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Butomus umbellatus Flowering-rush British Wild Flowers by John Somerville et al. Spencer, 1976: 284

Time of year - larvae: Currently unknown.

Time of year - adults: Currently unknown.

Distribution in Great Britain and Ireland: England including Cambridgeshire (NBN Atlas).

Distribution elsewhere: Widespread in continental Europe including Denmark, Sweden (Spencer, 1976: 284), Germany (Spencer, 1976: 562), Belgium, Finland, Hungary, Lithuania, Poland, Slovakia and The Netherlands (Fauna Europaea).

NBN Atlas links to known host species:

Butomus umbellatus

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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