|
|
(Coleoptera, Diptera, Hymenoptera and Lepidoptera)
by
Brian Pitkin, Willem Ellis, Colin Plant and Rob Edmunds
|
|
|
LASER.
Laser. [Apiaceae]
|
Only
one species of Laser, the introduced Laser (L. trilobum),
is recorded in Britain.
Only one British miner is recorded on Laser.
A key to the European miners recorded on Laser is provided in Bladmineerders van Europa.
|
Key for the identification of the known mines of British
insects (Diptera and non-Diptera) recorded on Laser
|
1 > Leaf-miner: A
regular greenish inter-parenchymal blotch mine, frequently delimited
by two veins, appearing somewhat mottled as a result of small deeper
areas of feeding through the upper parenchyma (Spencer, 1972b: 78 (fig. 259); Spencer,
1976: 428, 429 (fig. 748).
The
mine starts with a quite inconspicuous lower-surface corridor that
soon changes into an extensive interparenchymatous blotch. The upper
cell layer of the palisade parenchyma is eaten away in many places,
giving the mine in transparency a perforated appearance. Fresh mines
are pale green, later they turn brown; they give the leaves a strikingly
diseased impression. Feeding lines absent, frass grains strikingly
few. Larvae solitary. Pupation outside the mine, exit slit in lower
epidermis.
Forms a blotch mine between two veins, having a characteristic sieve-like appearance (where the larva has fed through the upper parenchyma). Pupation outside the mine.. |
|
|
Phytomyza heracleana puparium
Image: © Willem Ellis (Bladmineerders van Europa) |
On Heracleum, but not yet on Laser, in Britain and on Heracleum, ? Angelica, ? Caucalis, Laser, ? Laserpitium, Pastinaca, Peucedanum, Pimpinella and ? Seseli elsewhere. Widespread in Britain and continental Europe. Also
recorded in the Republic of Ireland.
|
Phytomyza
heracleana Hering, 1937 [Diptera:
Agromyzidae]. |
|