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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LASERPITIUM. Broad-leaved Sermountain. [Apiaceae]


Only one species of Laserpitium, the introduced Broad-leaved Sermountain (L. latifolium) is recorded in Britain.

Four British miners are recorded on Laserpitium.

A key to the European miners recorded on Laserpitium is provided in Bladmineerders van Europa.



Key for the identification of the known mines of British
insects (Diptera and non-Diptera) recorded on Laserpitium


1a > 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 (Bladmineerders van Europa).

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. (British leafminers).

Phytomyza heracleana puparium
Phytomyza heracleana puparium
Image: © Willem Ellis (Bladmineerders van Europa)

On Heracleum, but not yet on Laserpitium, 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].

1b > Leaf-miner: Larva forms an upper surface primary blotch with several larvae feeding together; the blotch is greenish when fresh but becomes yellowish with age (Spencer, 1972b: 78 (fig. 257); Spencer, 1976: 376, 377 (fig. 655)).

Round or oval blotch, green at first, later yellowish. Young mine are interparenchymatous, only the older mines are truly full depth. Generally several larvae in a communal mine. Pupation outside the mine. Exit slit in lower epidermis (Bladmineerders van Europa).

A conspicuous, yellowish, almost circular upper surface blotch. Normally several mines on a leaf which may run together giving the impression of a single mine (British leafminers).

Phytomyza angelicae puparium,  dorsal
Phytomyza angelicae puparium, dorsal
Image: © Willem Ellis (Bladmineerders van Europa)

On Aegopodium and Angelica, but not yet on Laserpitium, in Britain and elsewhere and Laserpitium elsewhere. Widespread throughout Britain and continental Europe. Also recorded in U.S.A. and Canada.

Phytomyza angelicae Kaltenbach, 1872 [Diptera: Agromyzidae].

1c > Leaf-miner: A large blotch, yellow or brown, preceded by a short, in the end mostly unrecognisable corridor. Generally several larvae in the mine. Especially in fresh mines the green primary and feeding lines area well marked. Pupation outside the mine.

On Angelica and possibly Arctium and Heracleum, but not yet on Laserpitium, in Britain. On Aegopodium, Angelica, Laserpitium and Pimpinella elsewhere. Widespread but very rare in Britain. Also recorded in the Republic of Ireland and throughout continental Europe, except in the south.

Cryptaciura rotundiventris (Fallén, 1814) [Diptera: Tephritidae].

1d > Leaf-miner: A large blotch, yellow or brown, preceded by a short corridor that in the end mostly is completely overrun. Generally several larvae share a mine. Especially in fresh mines the green primary and secondary feeding lines are well visible. Pupation outside the mine. Puparium yellow.

Euleia heraclei puparia
Euleia heraclei pupariria
Image: © Willem Ellis (Bladmineerders van Europa)

Polyphagous. On numerous genera of Apiaceae and possibly some Asteraceae, but not yet on Laserpitium, in Britain and elsewhere. Throughout the British Isles. Also recorded in the Republic of Ireland and most of the Palaearctic region, as far east as Afghanistan.

Euleia heraclei (Linnaeus, 1758) [Diptera: Tephritidae].



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