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 alpina Groschke, 1957
[Diptera: Agromyzidae]

Phytomyza alpina Groschke, 1957. Dt. ent. Z. (N.F.) 4(3-4): 122
Phytomyza alpina Groschke, 1957; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 76 (fig. 252), 80, 114
Phytomyza alpina Groschke, 1957; Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 293, 296 (fig. 1136), 297.

Leaf-miner: Mine irregularly linear, long, towards end wide. Pupation external (Spencer, 1972b: 80).

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.

Similar to those of Ph. tussilaginis (Griffiths, 1972b); anterior spiracles with 14-18 bulbs, posterior spiracles with 22-36 (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 (Spencer, 1972b: 80).

Hosts in Great Britain and Ireland:

Senecio jacobaea Common Ragwort British Wild Flowers by John Somerville et al. Mines in BMNH
Senecio jacobaea Common Ragwort British Wild Flowers by John Somerville et al. Spencer, 1972b: 114

Hosts elsewhere:

Senecio       Spencer, 1990: 293
Senecio alpinus     Bladmineerders van Europa
Senecio jacobaea Common Ragwort British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Senecio subalpinus     Bladmineerders van Europa

Time of year - mines: July-August.

Time of year - adults: Currently unknown.

Distribution in Great Britain and Ireland: A boreal-alpine species, not known south of Yorkshire. Yorkshire (Ingleborough), Perthshire (Killin), Sutherland (Golspie), Inverness (Holspie Point) (Spencer, 1972b: 80).

Also recorded in the Republic of Ireland: Co. Clare (Burren) (Spencer, 1972b: 80)

Distribution elsewhere: Widespread in continental Europe including Austria, Czech Republic, Germany, Poland, Slovakia and Switzerland (Fauna Europaea).

NBN Atlas links to known host species:

Senecio jacobaea, Senecio subalpinus

British and Irish Parasitoids in Britain and elsewhere:

Chrysocharis viridis (Nees, 1934) Eulophidae: Entedoninae
Ichneumonoidea - Links to species no longer available  
Dacnusa maculipes Thomson, 1895 Braconidae: Alysiinae
Dacnusa ocyroe Nixon, 1937 Braconidae: Alysiinae
Exotela spinifer (Nixon, 1954) Braconidae: Alysiinae
Apodesmia similis (Sz├ępligeti, 1898) Braconidae: Opiinae
Opius ambiguus Wesmael, 1835 Braconidae: Opiinae
Phaedrotoma exigua 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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