lappae Goureau, 1851
lappae Goureau, 1851. Annls Soc. ent. Fr. (2) 9:
Phytomyza lappina Robineau-Desvoidy, 1851. Rev. Mag.
Zool. (2)3: 399. [See Spencer, 1976: 438]
Phytomyza lappae Goureau, 1851; Hendel, 1935. Fliegen
palaearkt. Reg. 6(2): 422
Phytomyza lappae Goureau, 1851; Spencer, 1972b. Handbk
ident. Br. Ins. 10(5g): 74 (figs 246-7), 79, 111
Phytomyza lappae Goureau, 1851; Spencer, 1976. Fauna ent. Scand. 5(1): 438-9, figs 765-6
Phytomyza lappae Goureau, 1851; Spencer, 1990. Host
specialization in the World Agromyzidae (Diptera) : 251, 254
(fig. 948), 255, 257, 258, 293.
unusually long, narrow, whitish linear mine, frequently following
a vein. Numerous larvae can occur together in a single leaf which
can be completely eaten out. Pupation external (Spencer, 1972b: 74 (fig. 247); Spencer,
1976: 438, 439 (fig. 766)).
little widening corridor. The first part is contorted, and its very
first stretch is lower-surface; all other parts are upper-surface.
The lower-surface part is visible as a light patch when illuminated
from behind. The corridor often looks rather angular, because it
tends to follow a vein over a considerable distance. Frass in rather
large, well-spaced grains, often deposited at the same side of the
corridor for a considerable length. Often several mines in leaf,
that may seem white then when seen from a distance. Pupation outside
the mine; exit slit in upper epidermis (Bladmineerders van Europa).
A very long, white, upper surface gallery which follows the veins and can appear angular because of this. Usually several in one leaf (British
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 Sasakawa (1961)
and Dempewolf (2001: 194). The larva is 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).
Black; posterior spiracles each with an irregular ellipse of 20-28
bulbs (Spencer, 1976: 438).
Hosts in Great Britain & Ireland:
of year - mines: June-October.
of year - adults: Currently unknown.
in Great Britain & Ireland: Widespread and common throughout
British Isles (Spencer, 1972b:
79) including Hampshire (Fleet), Northampton (British
leafminers), Warwickshire (Brandon Wood) (Robbins,
1991: 119-120); Cambridgeshire (VC29), East Gloucestershire (VC33), East Sussex (VC14),
Haddington, Herefordshire (VC36), North-west Yorkshire (VC65), Shropshire (VC40), South-west Yorkshire (VC63), Surrey (VC17), West Gloucestershire (VC34) and Worcestershire (VC37) (NBN
elsewhere: Common in much of Europe including Denmark, Finland,
Norway, Sweden (Spencer, 1976:
438), The Netherlands, Luxembourg (Bladmineerders van Europa), Belgium (de
Bruyn and von Tschirnhaus, 1991), Germany (Spencer,
1976: 574; Dempewolf, 2001:
194), Czech Republic and Poland (Martinez in Fauna Europaea).
extending eastwards to Kazakhastan, Uzbekistan and the Kirghiz Republics
of the [former] U.S.S.R. (Spencer,
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: