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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Chromatomyia asteris (Hendel, 1934)
[Diptera: Agromyzidae]

Phytomyza asteris Hendel, 1934. Fliegen palaearkt. Reg. 6(2): 352
Phytomyza asteris Hendel, 1934; Rydén, Lyneborg and Nielsen, 1963. Tovinger III. Minerfluer, Agromyzidae. Danmarks Fauna 68. 153
Phytomyza asteris Hendel, 1934; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 71, 85 (fig. 281), 87
Chromatomyia asteris (Hendel, 1934); Spencer, 1976. Fauna ent. Scand. 5(1): 388-9, figs. 677.
Chromatomyia asteris (Hendel, 1934); Spencer, 1990. Host specialization in the world Agromyzidae (Diptera) : 274, 281, 282 (fig. 1074), 283.
Phytomyza asteris Hendel, 1934; Winkler et al. 2009. Syst. ent. 34: 260-292.


Leaf-mine: Mine narrow, irregular linear; initially on lower surface but mainly upper surface. Pupation internal (Spencer, 1972b: 87).

Initially lower-surface, later upper-surface corridor, not appreciably widening towards the end. Corridor often strongly contorted. Frass in rather coarse grains, irregularly scattered. Pupation in the mine (Bladmineerders van Europa).

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 de Meijere (1926, as Phytomyza sp. on Aster tripolium); de Meijere (1928); de Meijere (1934, as Ph. tenella) and Griffiths (1976c).

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).

Whitish; posterior spiracles each with a circle of up to 25 bulbs (Spencer, 1976: 388).

Hosts in Great Britain & Ireland:

Asteraceae        
Aster tripolium Sea Aster British Wild Flowers by John Somerville et al. Bland, 1994
Aster tripolium Sea Aster British Wild Flowers by John Somerville et al. Mines in BMNH
Aster tripolium Sea Aster British Wild Flowers by John Somerville et al. Spencer, 1972b: 111

Hosts elsewhere:

Asteraceae        
Aster tripolium Sea Aster British Wild Flowers by John Somerville et al. Spencer, 1976: 388
Aster tripolium Sea Aster British Wild Flowers by John Somerville et al. Spencer, 1990: 281
Aster tripolium Sea Aster British Wild Flowers by John Somerville et al. Bladmineerders van Europa

Time of year - mines: July-October.

Time of year - adults: July or January the following year.

Distribution in Great Britain & Ireland: Widespread around coasts. Records for Britain include Kent (Faversham) (Spencer, 1972b: 87), Stirling (Higginsneuk) and North Uist (Oban Trumisgarry) (Bland, 1994c: 83) and East Kent, East Suffolk, Glamorgan, North Essex, West Norfolk and Westmorland (NBN Atlas).

Also recorded in the Republic of Ireland: Co. Clare (Dunratty and Poulnaclough Bay) and Co. Down (Corlingford Loch) (Spencer, 1972b: 87).

Distribution elsewhere: Widespread in continental Europe including Denmark, France, Germany (Spencer, 1976: 388), The Netherlands, Belgium (Kabos, 1971; Collart, 1942), Czech Republic, Poland, Slovenia and Sweden (Martinez in Fauna Europaea).

NBN Atlas links to known host species:

Aster tripolium

British and Irish Parasitoids in Britain and elsewhere:

Ichneumonoidea  
Dacnusa areolaris (Nees, 1811) Braconidae: Alysiinae
Dacnusa sibirica Telenga, 1935 Braconidae: Alysiinae


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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