The leaf and stem mines of British flies and other insects
 

(Coleoptera, Diptera, Hymenoptera and Lepidoptera)

by Brian Pitkin, Willem Ellis, Colin Plant and Rob Edmunds

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COMARUM. [Rosaceae]


Potentilla palustris is treated as Comarum palustre by Stace (2010).

Only one British miner is recorded on Comarum.

See POTENTILLA.

A key to the European miners recorded on Comarum is provided in Bladmineerders van Europa.



Key for the identification of the known mines of British
insects (Diptera and non-Diptera) recorded on Comarum


1 > Leaf-miner: Initially a linear mine which later develops into a conspicuous blotch; frass in two rows in linear section, scattered irregularly in the blotch (Spencer, 1976: 134-5, fig. 237, as potentillae).

Corridor, gradually and considerably widening towards the end. Frass in two rows in the corridor part, further up dispersed irregularly. Pupation outside the mine (Bladmineerders van Europa).

A short broad upper surface corridor leading to a long blotch between veins (British leafminers).

On Agrimonia, Filipendula, Fragaria, Geum, Potentilla, Rubus and Sanguisorba in Britain. On additional Rosaceae elsewhere. Common and widespread throughout Britain. Also recorded in the Republic of Ireland, Europe, Japan, U.S.A. and Canada.

Agromyza idaeiana (Hardy, 1853) [Diptera: Agromyzidae].



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