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 marionae Griffiths, 1963
[Diptera: Agromyzidae]

Agromyza marionae Griffiths, 1963a. Entomologist's mon. Mag. 98: 125
Agromyza marionae Griffiths, 1963a; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 41, 118
Agromyza marionae Griffiths, 1963a; Spencer, 1990. Host specialization in the world Agromyzidae (Diptera) : 112, 127.

Stem-mine: A long external whitish stem mine, feeding downwards from a leaf stalk or part of the upper stem. Pupation external (Spencer, 1972b: 41).

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).

Yellowish (Spencer, 1972b: 41).

Comments: Only a single female has been reared (Spencer, 1990: 127).

Hosts in Great Britain & Ireland:

Vicia cracca Tufted Vetch British Wild Flowers by John Somerville et al. Spencer, 1972b: 41, 118
Vicia sylvatica Wood Vetch British Wild Flowers by John Somerville et al. Spencer, 1972b: 41, 118

Hosts elsewhere: Currently unknown.

Time of year - mines: Currently unknown.

Time of year - adults: Currently unknown.

Distribution in Great Britain & Ireland: Huntingdonshire (Woodwalton Fen) and Cambridgeshire (Chippenham Fen) Spencer, 1972b: 41.

Also recorded in the Republic of Ireland: Co. Down (Spencer, 1972b: 41).

Distribution elsewhere: Widespread in continental Europe including Czech Republic, Finland, Germany, Lithuania and Spanish mainland (Martinez in Fauna Europaea).

NBN Atlas links to known host species:

Vicia cracca, Vicia sylvatica

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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