1a primary blotch mine with conspicuous primary and secondary feeding lines; rear spiracula of larva with 3 papillae: Euleia heraclei

1b corridor mine with at best indistinct primary feeding lines; rear spiracula with > 3 papillae => 2

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

2a pinnately branched corridor, main branch overlying midrib: Liriomyza strigata

2b no association with the midrib => 3

3a puparium in the mine, usually in an lower-surface pupal chamber; frass in discrete grains: Chromatomyia horticola

3b puparium formed after the mine is vacated; frass in strings: Liriomyza bryoniae