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

N.B. Links to the latest version of 'Leafminers and plant galls of Europe' are being edited

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Phytomyza cinerea Hendel, 1920
[Diptera: Agromyzidae]


Phytomyza cinerea Hendel, 1920. Arch. Naturgesch. 84A(7) (1918): 167
Phytomyza cinerea Hendel, 1920; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 94
Phytomyza cinerea Hendel, 1920; Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 251, 254 (figs 950-1), 255.


Leaf-mine: Mine a brownish blotch, at apex of leaf segment, several larvae feed together. Pupation in mine (Spencer, 1972b: 94).

Greenish, later brownish, upper-surface blotch in the tip of a leaf segment, without a trace of an initial corridor. Often several larvae share a mine. No secondary feeding lines. Frass in numerous blackish green granules that are irregularly scattered. Pupation within the mine, pupariria loose 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 puparium is described by (Hering, 1957a) (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).

Brown (Spencer, 1972b: 94).

Reddish brown; described by de Meijere (1926a) (Bladmineerders van Europa).

Hosts in Great Britain & Ireland:

Asteraceae        
Centaurea scabiosa Greater Knapweed British Wild Flowers by John Somerville et al. Mines in BMNH
Centaurea scabiosa Greater Knapweed British Wild Flowers by John Somerville et al. Robbins, 1991: 122
Centaurea scabiosa Greater Knapweed British Wild Flowers by John Somerville et al. Spencer, 1972b: 112

Hosts elsewhere:

Asteraceae        
Centaurea       Spencer, 1990: 251
Centaurea scabiosa Greater Knapweed British Wild Flowers by John Somerville et al. Bladmineerders van Europa

Time of year - mines: August.

Time of year - adults: Currently unknown.

Distribution in Great Britain & Ireland: Uncommon. Derby (Miller's Dale) (Spencer, 1972b: 94) and Warwickshire (Combrook) (Robbins, 1991: 122).

Distribution elsewhere: Widespread in continental Europe including Germany (Hendel, 1920: 167). Germany and SPanish mainland (Martinez in Fauna Europaea).

NBN Atlas links to known host species:

Centaurea scabiosa

British and Irish Parasitoids in Britain and elsewhere:

Ichneumonoidea  
Dacnusa maculipes Thomson, 1895 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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