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


CHAMERION. Rosebay Willowherb. [Onagraceae]

Only one species of Chamerion, Rosebay Willowherb (C. angustifolium) is recorded in Britain.

Two British miners are recorded on Chamerion.

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

Rosebay Willowherb - Chamerion aungustifolium. Image: © Brian Pitkin
Rosebay Willowherb
Chamerion aungustifolium

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

1a > Leaf-miner: A narrow contorted gallery leading to a whitish blotch with scattered frass centrally. The early gallery can merge with the blotch and there are often several to a leaf. The larva begins by making a full depth corridor, erratic in width and course; frass black, in an irregular central line. Later the larva makes a blotch, with frass in irregular clouds. This blotch can be a continuation of the corridor, but may just as well be on a different leaf. Often several mines in a leaf; in such cases the entire leaf me be mined out. Mines white at first, turning brown later. The larva lies venter-upwards in the mine. Pupation external. Occasionally in a mined leaf or in a cocoon between the leaves or on the leaves.

On Circaea and Epilobium, but not yet Chamerion, in Britain and Chamerion, Circaea and Epilobium elsewhere. Widespread in England and continental Europe.

Mompha langiella (Hübner, 1796) [Lepidoptera: Momphidae].

1b > Leaf-miner: A narrow gallery, often following the midrib, occasionally tinged red at the edges. This leads to a yellowish blotch containing dispersed frass.

On Chamerion angustifolium in Britain and elsewhere. Widespread in Britain, Ireland and continental Europe.

Mompha raschkiella (Zeller, 1839) [Lepidoptera: Momphidae].

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