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AGROSTIS. Bents. [Poaceae]

Twenty species of Agrostis are recorded in Britain. These include the native Velvet Bent (A. canina), Common Bent (A. capillaris), Black Bent (A. gigantea) and Creeping Bent (A. stolonifera). Three dipterous miners, the agromyzids Cerodontha atra, Cerodontha flavocingulata and Liriomyza pusio are recorded on Agrostis in Britain, although more species are to be expected (see Arrhenatherum). Miners on grasses should be reared, whenever possible, to confirm their identity. Elsewhere the grass-feeding agromyzids Agromyza albipennis, Agromyza nigripes, Cerodontha atra, Cerodontha flavocingulata, Cerodontha incisa, Cerodontha pygmaea, Chromatomyia milii and Chromatomyia nigra and the polyphagous ephydrid Hydrellia griseola are recorded mining Agrostis. One non-dipterous leaf-miner is recorded on Agrostis in Britain (see below). Elsewhere seven additional British non-dipterous minersare recorded on Agrostis (see below).

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

#> Details of mine unknown. Puparium brown. Liriomyza pusio (Meigen) [Agromyzidae]. 1> A lower surface mine. Normally pupation in the ground. Puparium yellowish-brown. Cerodontha (Phytagromyza) flavocingulata (Strobl) [Agromyzidae]. ->Lower-surface corridor in the top half the leaf blade; the mine changes direction at least two times. One to three larvae in a mine. Frass in rather regular granules. Cerodontha (Poemyza) atra (Meigen, 1830) [Agromyzidae].

Non-dipterous miners recorded on Agrostis in Britain Elachista humilis Zeller, 1850 Lepidoptera: Elachistidae     Additional British non-dipterous miners recorded on Agrostis elsewhere Elachista albifrontella (Hübner, 1817) Lepidoptera: Elachistidae Elachista argentella (Clerck, 1759) Lepidoptera: Elachistidae Elachista apicipunctella Stainton, 1849 Lepidoptera: Elachistidae   Elachista canapennella (Hübner, 1813) Lepidoptera: Elachistidae     Elachista freyerella (Hübner, 1825) Lepidoptera: Elachistidae   Elachista maculicerusella (Bruand, 1859) Lepidoptera: Elachistidae Elachista stabilella Stainton, 1858 Lepidoptera: Elachistidae

Last updated 19-Aug-2008  Brian Pitkin