1a puparium in the mine, in a, usually lower-surface, pupal chamber: Chromatomyia horticola

1b before pupation the larva leaves the mine through a semicircular exit slit => 2

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

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

2b corridor little branched, not pinnate, not associated with the midrib => 3

3a corridor upper-surface; frass in a broad, central green band; larva: rear spiraculum with 3 papillae: Liriomyza congesta

3b corridor often partly lower-surface; frass without green band, in black grains and thread fragments; rear spiraculum with 7-9 papillae: Liriomyza bryoniae