Phytomyza trolliivora [Diptera: Agromyzidae] in Leaf and stem mines of British flies and other insects

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

Phytomyza trollii Hering, 1930
[Diptera: Agromyzidae]

Phytomyza trollii Hering, 1930b. Z. angew. Ent. 17: 464
Phytomyza trollii Hering, 1930b; Hendel, 1935. Fliegen palaearkt. Reg. 6(2): 492
Phytomyza wahlbergi Rydén, 1951b. Ent. Tijdschr. 72(1-2): 179. [Synonymised by Spencer, 1976: 518]
Phytomyza trollii Hering, 1930b; Spencer, 1976. Fauna ent. Scand. 5(1): 518-20, figs 906-908A.
Phytomyza trollii Hering, 1930b; Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 21, 23, 24 (figs 40-1).

Leaf-mine: Simple white linear mine; frass deposited in scattered black spots. Pupation external (Spencer, 1976: 520).

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.

Mandible with 2 teeth; rear spiraculum with 14-17 papillae (de Meijere, 1937a) (Bladmineerders van Europa).

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).

Black; posterior spiracles each on a stout conical protuberance with an ellipse of some 15 minute bulbs (Spencer, 1976: 520).

Brownish black (de Meijere, 1934a) (Bladmineerders van Europa).

Hosts in Great Britain and Ireland:

Ranunculaceae
Trollius	europeaus	Globeflower		Bland, Godfray and Henshaw, 1999: 50

Hosts elsewhere:

Ranunculaceae
Trollius			Spencer, 1990: 21
Trollius	europeaus	Globeflower	Spencer, 1976: 520
Trollius	europeaus	Globeflower	Bladmineerders van Europa

Time of year - larvae: Currently unknown.

Time of year - adults: Mid-September.

Distribution in Great Britain and Ireland: Recorded in Britain from a single male caught in a yellow water trap at Malham Tarn, North Yorkshire (Bland, Godfray and Henshaw, 1999: 50). Added to the British checklist by Henshaw in Chandler, 1998.

Distribution elsewhere: Widespread in continental Europe including Austria, Denmark, Finland, Norway, Sweden, Switzerland (Spencer, 1976: 520), Germany (Spencer, 1976: 578), Estonia, French mainland, Lithuania and Switzerland (Fauna Europaea).

NBN Atlas links to known host species:

Trollius europaeus

British and Irish Parasitoids in Britain and elsewhere:

Chalcidoidea
Chrysocharis viridis (Nees, 1934)	Eulophidae: Entedoninae


External links:	Search the internet:
Biodiversity Heritage Library Bladmineerders van Europa British leafminers Encyclopedia of Life Fauna Europaea NBN Atlas NHM UK Checklist	Find using Google Find using Google Scholar Find images using Google


	Last updated 06-Oct-2017 Brian Pitkin