Diplotaxis wall rocket
(For a dichotomous table for galls on Diplotaxis by Hans Roskam click here)
Dichotomous table for leafminers
1a mine either ends, or begins, in the stem, petiole or midrib => 2
1b mine at most on the midrib, or free in the leaf blade => 4
1c galls, etc. => Tables for all parasites per species
Dichotomous table for leafminers
1a mine either ends, or begins, in the stem, petiole or midrib => 2
1b mine at most on the midrib, or free in the leaf blade => 4
1c galls, etc. => Tables for all parasites per species
2a corridor that vanishes in a thick vein: Phytomyza rufipes
2b narrow corridor (sometimes overrun later), widening into an irregular blotch on, partly also within, the midrib => 3
3a frass in thread fragments; mines in May-June: Liriomyza xanthocera
3b frass powdery, in blackish-green clouds; mines in May-October: Scaptomyza flava
4a mine, at least largely, full depth; larva with chitinised head => 5
4b mine upper- and/or lower-surface (patches sometimes full depth); larva a maggot => 10
5a small blotch, < 1 cm; larva later lives free => 6
5b mine > 1 cm, blotch or corridor => 8
6a older larvae live free at the underside of the leaves: Plutella xylostella
6b older larvae live among spun leaves => 7
7a larva with reddish brown length lines: Hellula undalis
7b no length lines: Cnephasia asseclana
8a larva without feet; mine an irregular gallery: Ceutorhynchus minutus
8b larva with thoracic feet; last part of the mine more or less a blotch => 9
9a bloth roundish with a green centre; species of Maideira and the Selvagens: Xenostrongylus histrio
9b blotch elongate without a green centre; common species all over Europe: Phyllotreta nemorum
10a corridor from start to end => 11
10b irregular blotch, preceded by a fine corridor (may have been overrun) => 3
11a broad, pinnately branched corridor, main branch overlying the midrib; pupation after the mine has been vacated; frass in strings: Liriomyza strigata
11b corridor little branched, not pinnate => 12
12a puparium in the mine, in a, generally lower-surface, pupal chamber; frass in discrete grain: Chromatomyia horticola
12b pupation external; frass in strings: Liriomyza brassicae