Valerianella corn salad
(For a dichotomous table for galls on Valerianella by Hans Roskam click here)
Dichotomous table for leafminers
1a mine full depth; larva with chitinised head: Comasinus insignus
1b mine upper- or lower-surface; larva a maggot => 2
1c galls, etc => Tables for all parasites per species
Dichotomous table for leafminers
1a mine full depth; larva with chitinised head: Comasinus insignus
1b mine upper- or lower-surface; larva a maggot => 2
1c galls, etc => Tables for all parasites per species
2a main part of the mine (corridor or elongated blotch) positioned over the midrib => 3
2b mine an (almost) unbranched corridor, not associated with the midrib => 4
3a main axis of the mine a corridor; larva: rear spiraculum with 10-13 papillae: Liriomyza strigata
3b main axis an elongated blotch; rear spiraculum with 3 papillae: Liriomyza xanthocera
4a frass in strings: Liriomyza valerianae
4b frass in isolated grains => 5
5a puparium in the mine, in a, usually under-surface, pupal chamber; larva: rear spiraculum with 6-9 papillae: Chromatomyia horticola
5b pupation outside the mine; rear spiraculum with 3 papillae: Liriomyza valerianellae