1a pupation within the mine, in a, usually lower-surface, pupal chamber; frass in isolated grains: Chromatomyia horticola

1b pupation outside the mine; frass in strings => 2

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

2a corridor pinnately branched; main and side branches on top of midrib and side veins: Liriomyza strigata

2b corridor less, and not pinnately, branched, not associated with the leaf venation: Liriomyza bryoniae