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TYPHA. Bulrushes. [Typhaceae]

Three species of Typha are recorded in Britain. These include the native Lesser Bulrush (T. angustifolia) and Bulrush (T. latifolia). Only one dipterous miner, the ephydrid Hydrellia griseola occurs on Typha in Britain. The agromyzid Liriomyza trifolii, a polyphagous pest species of ornamental and vegetable crops occasionally intercepted at UK points of entry, is recorded on Rorippa. Elsewhere the polyphagous agromyzids Liriomyza strigata and Liriomyza trifolii are recorded mining Typha. Two non-dipterous miners are recorded on Typha in Britain (see below).

Bulrush - Typha latifolia

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

1> Irregularly formed mine, very shallow and as a result, whitish in colour. In broad leaved plants frequently star-shaped and sometimes a very shallow corridor. In grasses the mine frequently starts in the leaf sheath. The frass is finely grained, initially irregularly spread, later in clumps. The larva may mine more than one leaf. Pupation in separate mine (sometimes even on another plant) without frass. Puparium whitish to dark grey Mine of Hydrellia griseola on Glyceria fluitans. Image: Willem Ellis (Source: Nederlandse bladmineerders) Hydrellia griseola (Fallén) [Ephydridae].

Non-dipterous miners recorded on Typha in Britain Calamotropha paludella (Hübner, 1824) Lepidoptera: Crambidae   Orthotelia sparganella (Thunberg, 1788) Lepidoptera: Glyphipterigidae

Last updated 30-Jul-2008  Brian Pitkin

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