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GERANIUM. Herb Robert and Crane's-Bills. [Geraniaceae]

Thirty-six species of Geranium are recorded in Britain, twelve of which are native. Wood Crane's-bill (G. sylvaticum) is protected in Northern Ireland under Schedule 8 of the Wildlife (Northern Ireland) Order, 1985. Only one dipterous miner, the agromyzid Agromyza nigrescens, is recorded on Geranium in Britain. Elsewhere the agromyzid Agromyza nigrescens is recorded mining Geranium. One non-dipterous leaf-miner is recorded on Geranium in Britain (see below). Elsewhere two non-dipterous British miner arerecorded on Geranium (see below).  .

Crane's-bill - Geranium sp.

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

1> Initially a narrow linear mine which after first moult widens into large linear or irregular blotch; frass in distinct rows in the early linear section, later more scattered. Puparium reddish-brown; posterior spiracles each with 3 spiracular pores. Agromyza nigrescens Hendel [Agromyzidae].

Non-dipterous miners recorded on Geranium in Britain Fenella sp. Hymenoptera: Tenthredinidae       Non-dipterous British miners recorded on Geranium elsewhere Orthochaetes insignis (Aube, 1863) Coleoptera: Curculionidae

Last updated 20-Oct-2008  Brian Pitkin

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