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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Liriomyza occipitalis Hendel, 1931
[Diptera: Agromyzidae]


Liriomyza occipitalis Hendel, 1931. Fliegen palaearkt. Reg. 6(2): 235
Liriomyza bruscae Hering, 1962. Dt. ent. Z. (N.F.) 9(1-2): 42. [Synonymised by Spencer, 1976: 258]
Liriomyza bruscae Hering, 1962; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 51 (fig. 163), 54, 109. [Synonymised by Spencer, 1976: 258]
Liriomyza occipitalis Hendel, 1931; Spencer, 1976. Fauna ent. Scand. 5(1): 258-9, figs 456-7
Liriomyza occipitalis Hendel, 1931; Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 5, 6, 7 (figs 8-9).


Leaf-mine: Larva mining the narrow branches, not the stem. Pupation external (Spencer, 1976: 259).

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.

Posterior spiracles unusually long, each with up to 14 bulbs (Spencer, 1976: 259).

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).

Brownish-black, black when parasitised (Spencer, 1976: 259).

Hosts in Great Britain & Ireland:

Equisetaceae        
Equisetum arvense Field Horsetail British Wild Flowers by John Somerville et al. Spencer, 1972b: 109

Hosts elsewhere:

Equisetaceae        
Equisetum arvense Field Horsetail British Wild Flowers by John Somerville et al. Spencer, 1990: 6

Time of year - mines: Currently unknown.

Time of year - adults: May.

Distribution in Great Britain & Ireland: Uncommon. Hertfordshire (Barnet) and London (Hampstead) (Spencer, 1972b: 54); Cambridgeshire and SOuth-west Yorkshire (NBN Atlas).

Distribution elsewhere: Widespread in continental Europe including Finland, Germany, Russia (Leningrad area) (Spencer, 1976: 259), Czech Republic, French mainland, Poland and Slovakia (Martinez in Fauna Europaea).

NBN Atlas links to known host species:

Equisetum arvense

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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