1a larva makes fleck mines from a transportable case: Coleophora pennella

1b larva mines from the inside, making a gallery and/or blotch mine => 2

1c gallen etc => Tabellen voor alle parasieten per soort

2a larva a maggot: Agromyza abiens

2b larva with feet and a well recognisable head => 3

3a blotch, preceded by a long, narrow gallery: Perittia echiella

3b blotch, without a preceding gallery => 4

4a larva light grey: Cynaeda dentalis

4b larva black: Cynaeda gigantea