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


Agromyza conjuncta Spencer, 1966
[Diptera: Agromyzidae]

Agromyza conjuncta Spencer, 1966c. Beitr. Ent. 16(3-4): 286
Agromyza conjuncta Spencer, 1966c; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 30 (fig. 77), 33
Agromyza conjuncta Spencer, 1966c; Spencer, 1990. Host specialization in the world Agromyzidae (Diptera) : 359.

Lifestyle: Currently unknown.

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.

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: It 'obviously feeds on Poaceae' (Spencer, 1990: 359).

Hosts in Great Britain and Ireland: Currently unknown.

Hosts elsewhere: Currently unknown.

Time of year - larvae: Currently unknown.

Time of year - adults: June.

Distribution in Great Britain and Ireland: Cambridge (Dullingham), Glamorgan (Porthcawl), Dunbartonshire (Bonhill) (Spencer, 1972b: 33) and West Gloucestershire (NBN Atlas).

Distribution elsewhere: Uncommon but Widespread in continental Europe, particularly in the south (Spencer, 1972b: 33), including Belgium, Crete, Czech Republic, Dodecanese Is., French mainland, Germany, Italian mainland, Poland, Sicily, Slovakia and Yugoslavia (Fauna Europaea).

NBN Atlas links to known host species:

Host species unknown  

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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