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LEONTODON. Hawkbits. [Asteraceae]

Five of species of Leontodon are recorded in Britain. These include the native Autumn Hawkbit (L. autumnalis), Rough Hawkbit (L. hispidus) and Lesser Hawkbit (L. saxatilis). Six dipterous miners, the agromyzids Chromatomyia farfarella, Chromatomyia syngenesiae, Liriomyza taraxaci, Ophiomyia beckeri, Ophiomyia pinguis and Ophiomyia pulicaria are recorded on Leontodon in Britain. Elsewhere the agromyzids Chromatomyia 'atricornis', Chromatomyia farfarella, Chromatomyia fuscula, Ophiomyia beckeri, Ophiomyia heringi, Liriomyza strigata, Liriomyza taraxaci, Ophiomyia heringi, Ophiomyia beckeri, Ophiomyia pulicaria and Phytomyza marginella and the tephritid Trypeta immaculata are recorded mining Leontodon. One non-dipterous miner is recorded on Leontodon in Britain (see below).

Autumn Hawkbit - Leontodon autumnalis.

Key for the identification of the known Diptera mines in Britain.

1> Mine primarily associated with mid-rib. 2. ->Mine not primarily associated with mid-rib. 3. 2> A whitish blotch-mine along the mid-rib, with lateral offshoots into the leaf blade. Pupation internal. Puparium pale, whitish-yellow Mine of Ophiomyia pulicaria on Taraxacum officinale. Image: Willem Ellis (Source: Nederlandse bladmineerders) Ophiomyia pulicaria (Meigen) [Agromyzidae]. ->A white mine along mid-rib, with offshoots into leaf blade. Pupation internal at base of mid-rib. Puparium whitish Mine of Ophiomyia beckeri on Lapsana communis. Image: Willem Ellis (Source: Nederlandse bladmineerders) Ophiomyia beckeri (Hendel) [Agromyzidae]. 3> A narrow, whitish linear mine. Pupation internal. Puparium white Chromatomyia farfarella (Hendel) [Agromyzidae]. ->Mine linear, whitish, both upper and lower surface. Pupation internal, at the end of the mine. Puparium white or more rarely darker, brownish, with the anterior spiracles projecting through the epidermis Chromatomyia syngenesiae (Hardy) [Agromyzidae]. ->A small somewhat irregular, elongate blotch. Mine of Liriomyza taraxaci on Taraxacum officinale. Image: Willem Ellis (Source: Nederlandse bladmineerders) Liriomyza taraxaci Hering [Agromyzidae]. ->Egg is laid beneath the epidermis on the upper leaf surface. Larva mine in basal leaves. Pupation internal. Puparium pale whitish-yellow Ophiomyia pinguis (Fallén) [Agromyzidae].

Non-dipterous miners recorded on Leontodon in Britain Cnephasia conspersana Douglas, 1846 Lepidoptera: Tortricidae

Last updated 30-Jul-2008  Brian Pitkin

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