Primula primrose

Dichotomous table for leafminers

See also the closely related genus Cortusa.

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: Cnephasia sedana; Coleophora nubivagella, obviella, rectilineella; Liriomyza bryoniae, trifolii; Monochroa servella; Perizoma incultaria.

mod 9.x.2017