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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ARNOSERIS. Lamb's Succory. [Asteraceae]


Only one species of Arnoseris is recorded in Britain - Lamb's Succory (A. minima). It is native.

Two or three British miners are recorded on Arnoseris.

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



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


1a > Leaf-miner: Mine linear, whitish, both upper and lower surface. Pupation internal, at the end of the mine with the anterior spiracles projecting through the epidermis (Spencer, 1976: 433).

Upper-surface, less often lower-surface corridor. Frass in isolated grains. Pupation within the mine, usually in a lower-surface puparial chamber (Bladmineerders van Europa).

A long whitish upper surface corridor, which eventually goes lower surface (British leafminers).

Two highly polyphagous species of Chromatomyia, with indistinguishable mines, have been recorded in Britain. These are syngenesiae (Hardy) and horticola (Goureau, 1851) which can only be distinguished by the male genitalia. Both species are widespread in Britain and elsewhere, although syngenesiae is almost entirely restricted to Asteraceae. Records on Asteraceae not based on examination of male genitalia are treated in this account as Chromatomyia 'atricornis'.

Chromatomya syngenesiae is recorded in Britain on 27 plant genera in the family Asteraceae, including Arnoseris, and many more genera elsewhere.

Chromatomyia 'atricornis' is recorded on Arnoseris elsewhere.

Chromatomyia horticola (Goureau, 1851) [Diptera: Agromyzidae]
OR
Chromatomyia syngenesiae Hardy, 1849 [Diptera: Agromyzidae].

1b > Leaf-miner: A small somewhat irregular, elongate blotch.

Liriomyza taraxaci larva,  dorsal
Liriomyza taraxaci larva, dorsal
Image: © Willem Ellis (Bladmineerders van Europa)
Orchestes fagi larva,  dorsal
Liriomyza taraxaci puparium
Image: © Willem Ellis (Bladmineerders van Europa)

On Leontodon and Taraxacum, but not yet on Arnoseris, in Britain and Aposeris, Arnoseris, Leontodon and Taraxacum elsewhere, Widespread in Britain and continental Europe.

Liriomyza taraxaci Hering, 1927 [Diptera: Agromyzidae].



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