incl. Cruciata; there is a separate key for Asperula.
Dichotomous table for leafminers
1a fleck mine; larva in a helicoid case: Apterona helicoidella
1b mine in connection with corridors in the cortex or the pith of the stem or a node => 2 *
1c upper-surface corridor, wholly in the leaf => 5
1d galls, etc => Tables for all parasites per species
2a several whorls on top of each other with mined leaves: Aulagromyza galii
2bno vertical connection between the whorls => 3
3a larva: rear spiraculum with 4-5 papillae: Ophiomyia galii
3b rear spiraculum with > 15 papillae => 4
4a larva: last segment, behind the rear spiracula, with an unusual, sac-like extension: Aulagromyza orphana
4b no such extension: Aulagromyza lucens
5a larva: rear spiraculum with 13-15 papillae: Galiomyza morio
5b rear spiraculum with 3 papillae: Galiomyza galiivora
* Some stem-boring Agromyzidae species, might occasionally be found starting or trespassing in a leaf.