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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IMPATIENS. Balsams. [Balsaminaceae]


Only one species of Impatiens is native to Britain - Touch-me-not Balsam (I. noli-tangere). A further five have been introduced - Kashmir Balsam (I. balfourii), Balsam (I. balsami), Orange Balsam (I. capensis), Indian Balsam (I. glandulifera) and Small Balsam (I. parviflora). The BSBI provide a downloadable plant crib for Impatiens.

Only one British miner, the agromyzid Phytoliriomyza melampyga, is recorded on Impatiens.

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

Indian Balsam - Impatiens glandulifera. Image: © Brian Pitkin
Indian Balsam
Impatiens glandulifera


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


1 > Leaf miner: A narrow linear mine in the first instar, later producing a large irregular whitish blotch with conspicuous black frass. Pupation external (Spencer, 1972b: 47 (fig. 144), 50; Spencer, 1976: 297 (fig. 536), 298).

Long untidy corridor that irregularly widens and narrows. Frass in lumps, strings or thread fragments. Pupation outside the mine (Bladmineerders van Europa).

The larva forms a narrow linear mine in the first instar, later producing a large irregular whitish blotch with conspicuous black frass (British leafminers).

The mine is also illustrated in the Encyclopedia of Life.

Oligophagous. On Impatiens glandulifera, Impatiens noli-tangere and Impatiens parviflora in Britain and elsewhere. Widespread in Britain and elsewhere. Described from the U.S.A. and also recorded in Canada.

Phytoliriomyza melampyga (Loew, 1869) [Diptera: Agromyzidae].



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