Rubia madder
Dichotomous table for leafminers
1a upper-surface corridor; larva a maggot: Galiomyza morio
1b mine full depth; larva with sclerotised head => 2
1c galls, etc => Tables for all parasites per species
2a species of the Canary Islands: Pragmatodes fruticosella
2b species of the South European mainland: Monochroa melagonella