Primula primrose
See also the closely related genus Cortusa.
Dichotomous table for leafminers
1a mine covers several leaves, as well as the stem part connecting them: Delia echinata
1b upper- or lower-surface corridor; larva a maggot => 2
1c full depth corridor or blotch; larva with chitinised head => 3
1d gallen etc => Tabellen voor alle parasieten per soort
2a frass in strings and thread fragments; puparium outside the mine; mine branched, main branch overlying the midrib: Liriomyza strigata
2b frass in large, widely separated grains; puparium in the mine; mine not oriented over the midrib: Chromatomyia primulae
3a mine in leaf base and midrib, from where corridors extend into blade; larvae without feet: Orthochaetes insignis
3b a corridor that winds freely through the leaf; larva with thoracic feet: Apteropeda orbiculata
Not included in the key: Cheilosia laeviventris; Cnephasia sedana; Coleophora nubivagella, obviella, rectilineella; Liriomyza bryoniae, trifolii; Monochroa servella; Perizoma incultaria.