Plant Parasites of Europe

leafminers, galls and fungi

Lepidium

Lepidium cress, pepperweed

incl. Coronopus, Senebiera. See also Cardaria, that often is united with Lepidium.

Dichotomous table for leafminers

1a larva with well recognisable head; mine full depth, transparant => 2

1b larva a maggot; mine upper- or lower-surface, greenish when lighted from behind => 6

1c galls, etc => Tables for all parasites per species

2a larva with prolegs; older larvae live free; mine mostly quite small => 3

2b no prolegs; larve mines livelong; mine not that small, a corridor => 5

3a body of larva dark: Cnephasia incertana

3b body of larva ± bone coloured => 4

4a older larva live free under a leaf: Plutella xylostella

4b older larvae live in some leaves, held together with silk: Hellula undalis

5a larva without feet: Ceutorhynchus minutus

5b larva with thoracic feet: Phyllotreta nemorum

6a mine a corridor, in the end widening into an irregular blotch => 7

6b a corridor from start to end => 8

7a frass powdery, in green clouds in remote corners of the mine: Scaptomyza flava

7b frass black, in grains or strings: Liriomyza xanthocera

8a corridor pinnately branched, its main and side branches on top of the midrib and lateral veins: Liriomyza strigata

8b several short corridors, starting from the midrib: Ophiomyia beckeri

8c corridor independent of the leaf veins => 9

9a pupation within the mine, in a, generally lower-surface, pupal chamber: Chromatomyia horticola

9b pupation external => 10

10a larva: rear spiraculum with 7-12 papillae: Liriomyza bryoniae

10b rear spiraculum with 3 papillae: Liriomyza brassicae

Tables for all parasites per species

Last modified 28.iv.2020