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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Liriomyza erucifolii de Meijere, 1943
[Diptera: Agromyzidae]


Liriomyza erucifolii de Meijere, 1943. Tijdschr. Ent. 86: 68
Liriomyza erucifolii de Meijere, 1943; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 51 (fig. 170), 55, 114
Liriomyza erucifolii de Meijere, 1943; Spencer, 1976. Fauna ent. Scand. 5(1): 244-6, figs 423-4.
Liriomyza erucifolii de Meijere, 1943; Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 293, 294 (fig. 1127), 295.


Leaf-mine: A relatively long irregular linear mine, normally commencing near the apex of the leaf and for a while following the leaf margin (Spencer, 1976: 244).

Short, broad, upper-surface corridor, sometimes forming a secondary blotch. Frass in pearl chains or strings. Pupation outside the mine; exit slit in upper epidermis (Bladmineerders van Europa).

The initial mine is a corridor, which normally follows the leaf edge. It then expands to form a blotch (British leafminers).

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 briefly described by de Meijere (1943) and illustrated in 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).

Yellow (Bladmineerders van Europa).

Hosts in Great Britain & Ireland:

Asteraceae        
Senecio erucifolius Hoary Ragwort British Wild Flowers by John Somerville et al. Robbins, 1991: 109
Senecio erucifolius Hoary Ragwort British Wild Flowers by John Somerville et al. Spencer, 1972b: 114
Senecio erucifolius Hoary Ragwort British Wild Flowers by John Somerville et al. British leafminers
Senecio jacobaea Common Ragwort British Wild Flowers by John Somerville et al. Robbins, 1991: 109
Senecio jacobaea Common Ragwort British Wild Flowers by John Somerville et al. British leafminers
Senecio jacobaea Common Ragwort British Wild Flowers by John Somerville et al. Spencer, 1972b: 114

Hosts elsewhere:

Asteraceae        
Senecio erucifolius Hoary Ragwort British Wild Flowers by John Somerville et al. Spencer, 1976: 244
Senecio erucifolius Hoary Ragwort British Wild Flowers by John Somerville et al. Spencer, 1990: 295
Senecio erucifolius Hoary Ragwort British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Senecio jacobaea Common Ragwort British Wild Flowers by John Somerville et al. Spencer, 1976: 244
Senecio jacobaea Common Ragwort British Wild Flowers by John Somerville et al. Spencer, 1990: 295
Senecio jacobaea Common Ragwort British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Senecio helenitis     Bladmineerders van Europa
Senecio ovatus Wood Ragwort British Wild Flowers by John Somerville et al. Bladmineerders van Europa

Time of year - mines: Summer and Autumn (British leafminers).

Time of year - adults: August.

Distribution in Great Britain & Ireland: Uncommon. Middlesex (Scratch Wood) (Spencer, 1972b: 55), Hampshire (Southwood) (British leafminers), Warwickshire (Binley, Combrook and Ufton) (Robbins, 1991: 109); Buckinghamshire, Cambridgeshire, Middlesex, North Somerset and South-west Yorkshire (NBN Atlas).

Distribution elsewhere: Widespread in continental Europe including France, Denmark (Spencer, 1976: 244), Sweden (Spencer, 1976: 559), The Netherlands (Bladmineerders van Europa), Germany (Spencer, 1976: 558), Czech Republic and Poland (Martinez in Fauna Europaea).

NBN Atlas links to known host species:

Senecio erucifolius, Senecio jacobaea, Senecio ovatus

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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