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


Aulagromyza trivittata (Loew, 1873)
[Diptera: Agromyzidae]

Agromyza trivittata Loew, 1873. Berl. ent. Z. 17: 52
Agromyza trivittata Loew, 1873; Hendel, 1932. Fliegen palaearkt. Reg. 6(2): 298
Phytagromyza tristriata Hendel, 1932. Fliegen palaearkt. Reg. 6(2): 247
Phytagromyza tristriata Hendel, 1932; Nowakowski, 1962. Annls zool., Warsz. 20: 93
Paraphytomyza trivittata (Loew, 1873); Spencer 1972. Handbk ident. Br. Ins. 10(5g): 64
Paraphytomyza trivittata (Loew, 1873); Spencer, 1976. Fauna ent. Scand. 5(1): 324-5, figs 588-9.
Paraphytomyza trivittata (Loew, 1873); Spencer, 1990. Host specialization in the world Agromyzidae (Diptera) : 222, 223 (fig. 831), 229.
Aulagromyza trivittata (Loew, 1873)

Stem-borer: Larva feeding as internal stem-borer (Spencer, 1972b: 119).

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.

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).

Comments: This species should not be confused with Phytomyza trivittata Frost recorded in the U.S.A. and believed to feed in the seeds of Cordylanthus nevinii (see Spencer, 1990: 233-4).

Galium mollugo is treated as Galium album (Hedge Bedstraw) by Stace (2010).

Hosts in Great Britain and Ireland:

Galium mollugo Hedge Bedstraw British Wild Flowers by John Somerville et al. Spencer, 1976: 324
Galium mollugo Hedge Bedstraw British Wild Flowers by John Somerville et al. Spencer, 1972b: 119

Hosts elsewhere: Currently unknown.

Time of year - larvae: Currently unknown.

Time of year - adults: Currently unknown.

Distribution in Great Britain and Ireland: Widespread in southern England including Surrey (Box Hill), Hampshire (Beaulieu), Gloucester (Blaise Woods) and Somerset (Radstock) (Spencer, 1972b: 64) and Cambridgeshire, North Somerset and South-west Yorkshire (NBN Atlas).

Also recorded in the Republic of Ireland (Fauna Europaea).

Distribution elsewhere: Widespread in continental Europe including Denmark, Sweden (Spencer, 1976: 324), Germany (Spencer, 1976: 566), Austria, Belarus, Czech Republic, Estonia, French mainland, Hungary, Latvia, Lithuania, Norwegian mainland, Romania, Slovakia, Switzerland and The Netherlands (Fauna Europaea).

NBN Atlas links to known host species:

Galium mollugo

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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