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

1b upper- or lower-surface gallery or blotch; larva mines from within the leaf => 2

1c galls, etc => Tables for all parasites per species

2a brown blotch; pupation outside the mine: Agromyza abiens

2b whitish gallery; pupation within the mine, in a, generally lower-surface, pupal chamber: Chromatomyia horticola