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

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Agromyza prespana Spencer, 1957
[Diptera: Agromyzidae]

Agromyza prespana Spencer, 1957f. Entomologist's mon. Mag. 93: 35
Agromyza prespana Spencer, 1957f; Griffiths, 1963b. Tijdschr. Ent. 106: 146
Agromyza prespana Spencer, 1957f; Spencer, 1976. Fauna ent. Scand. 5(1): 136, figs 239, 240A-C.
Agromyza prespana Spencer, 1957f; Spencer, 1990. Host specialization in the world Agromyzidae (Diptera) : 356, 359.


Leaf-mine: Larva forms a broad mine beginning at the apex of the leaf (Spencer, 1976: 136).

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 Griffiths (1963). Mandibles with two teeth; anterior spiracles each with 11-14 bulbs; posterior spiracles have 3 characteristically bending bulbs (Spencer, 1976: 135-6, figs 240A and 240C).

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 (Spencer, 1976: 136).

Hosts in Great Britain & Ireland: Currently unknown.

Hosts elsewhere:

Poaceae        
Triticum       Spencer, 1990: 356
Triticum aestivum Bread Wheat   Spencer, 1976: 136
Triticum aestivum Bread Wheat   Bladmineerders van Europa

Time of year - larvae: Currently unknown.

Time of year - adults: Currently unknown.

Distribution in Great Britain & Ireland: Added to British checklist by Deeming (1995). Glamorgan (NBN Atlas).

Distribution elsewhere: Described from Yugoslavia and widespread in continental Europe from Macedonia through Austria to north Germany including Sweden (Spencer, 1976: 136), Czech Republic, French mainland, Hungary, Poland, Slovakia and Yugoslavia (Martinez in Fauna Europaea).

NBN Atlas links to known host species:

Triticum aestivum

British and Irish Parasitoids in Britain and elsewhere:

Ichneumonoidea  
Eurytenes abnormis (Wesmael, 1835) Braconidae: Opiinae
Opius cingulatus Wesmael, 1835 Braconidae: Opiinae


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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