valerianae Hendel, 1932
valerianae Hendel, 1932. Fliegen palaearkt. Reg. 6(2):
Liriomyza valerianae Hendel, 1932; Spencer, 1972b. Handbk
ident. Br. Ins. 10(5g): 51 (figs 161-2), 54, 121
Liriomyza valerianae Hendel, 1932; Spencer, 1976. Fauna
ent. Scand. 5(1): 275, figs 494-5.
Liriomyza valerianae Hendel, 1932; Spencer, 1990. Host
specialization in the World Agromyzidae (Diptera) : 245 (fig.
Leaf-mine: An irregular linear mine, which frequently follows the leaf margin,
with conspicuous black frass (Spencer, 1972b: 51 (fig.162), 54; Spencer,
often quite contorted, not infrequently a secondary blotch. Frass
in strikingly long strings. Pupation outside 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 (1925, as fasciola).
Posterior spiracles each with 3 bulbs (Spencer, 1972b: 54; Spencer, 1976:
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).
Posterior spiracles each with 3 bulbs (Spencer, 1972b: 54).
Hosts in Great Britain & Ireland:
of year - mines: July-August.
of year - adults: May, August.
in Great Britain & Ireland: Cambridge (Chippenham Fen),
Wiltshire (Heddington) (Spencer, 1972b: 54), West Perth (Drumchastle) and Angus (Rossie Muir)
(Bland, 1994c: 82); Mid-west
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Distribution elsewhere: Widespread in continental Europe including Denmark, Finland, Norway, Sweden
(Spencer, 1976: 275), The
Netherlands (Bladmineerders van Europa), Germany (Spencer,
1976: 562), Estonia, French mainland, Lithuania and Poland (Martinez
in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: