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ALISMA. Water-plantains. [Alismataceae]

Three species of Alisma are recorded in Britain - Ribbon-leaved Water-plantain (A. gramineum), Narrow-leaved Water-plantain (A. lanceolatum) and Water-plantain (A. plantago-aquatica). All are native species. Ribbon-leaved Water-plantain is protected under Schedule 8 of the Wildlife and Countryside Act, 1981. Four dipterous miners, the ephydrids Hydrellia flavicornis, Hydrellia griseola, Hydrellia meigeni and Hydrellia mutata, are recorded on Alisma in Britain. Elsewhere, in addition to the above ephydrids, the polyphagous agromyzid Liriomyza bryoniae is recorded mining Alisma. Only one non-dipterous leaf-miner is recorded on Alisma in Britain (see below).

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

#> Details of mine unknown. Hydrellia flavicornis (Fallén) [Ephydridae]. #> Details of mine unknown. Hydrellia meigeni Zatwarnicki [Ephydridae. #> Details of mine unknown. Hydrellia mutata (Zetterstedt) [Ephydridae]. -> 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 Alisma in Britain Bagous alismatis (Marsham 1802) Coleoptera: Curculionidae

Last updated 30-Jul-2008  Brian Pitkin

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