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

 

MELITTIS. Bastard Balm. [Lamiaceae]


Only one species of Melittis is recorded in Britain, the native Bastard Balm (M. melissophyllum).

Two British miners are recorded on Melittis.

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



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


1a > Leaf-miner and case-bearer: Blotch mines reaching the edge of the leaf, initially pale green turning brownish white, are caused by the larva feeding on the underside of a leaf. The fully developed case is slender, shining black brown, about 9 mm long. Towards the end a narrow, transparent yellowish ventral keel. Mouth angle 50-60°. Cases on the leaf underside.

On Calamintha, Clinopodium, Glechoma, ? Lycopus, Mentha, Nepeta, Origanum, Prunella, Salvia, Stachys and Thymus, but not yet on Melittis, in Britain plus Melissa, Melittis and Satureja but not Calamintha elsewhere. Throughout England and Wales and a few places in Scotland. Widespread in continental Europe.

Coleophora albitarsella Zeller, 1849 [Lepidoptera: Coleophoridae].

1b > Leaf-miner: A linear-blotch mine, first instar mine is linear, later developing into a conspicuous white blotch. Frass greenish diffused (Spencer, 1972b: 46, 47 (fig. 138); Spencer, 1976: 166).

The mine begins with a long, upper-surface, slender corridor. After a moult the larva changes its behaviour, and makes a large, upper-surface primary blotch without apparent feeding lines. Often the blotch overruns more or less the initial corridor. Frass in the corridor liquified to form a wide green band, with a few tiny black granules along the sides. Pupation outside the mine.

A narrow gallery leading to a largish blotch on the upper surface. Frass is green and indistinct in the gallery - small grains may be seen at the gallery edge.

Amauromyza labiatarum puparium
Amauromyza labiatarum puparium
Image: © Willem Ellis (Bladmineerders van Europa)

On numerous genera of Lamiaceae, including Ajuga, in Britain and elsewhere. Widespread and locally common in south of England. Also recorded in the Republic of Ireland and widespread and frequently common in continental Europe.

Amauromyza labiatarum (Hendel, 1920) [Diptera: Agromyzidae].

1c > Leaf-miner: Initially a long, slim corridor, the frass alternating on either the side of the corridor. After moulting, the larva broadens the mine and the frass is less regular. Pupation external.
Mine of Amauromyza lamii on Stachys sylvatica. Image: © Willem Ellis (Source: Bladmineerders en plantengallen van Europa)
Mine of Amauromyza lamii on Stachys sylvatica
Image: © Willem Ellis (Bladmineerders van Europa)

Hosts in Britain unknown. The record on Glechoma from Warwick (Kingsbury Wood) (Robbins, 1991: 103) is considered unlikely to be correct (Henshaw in Chandler, 1998). On Ajuga, Ballota, Galeopsis, Glechoma, Lamiastrum, Lamium, Leonurus, Marrubium, Mellitis, Mentha, Scutellaria and Stachys elsewhere. Widespread in continental Europe.

Amauromyza lamii (Kaltenbach, 1858) [Diptera: Agromyzidae].


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