Dichotomous table for leafminers
1a mine a pinnately branching gallery, main and side branches on top op midrib and side veins:: Liriomyza strigata
1b gallery not pinnately branched => 2
1c galls, etc => Tables for all parasites per species
2a pupation within the mine, in a, generally lower-surface, pupal chamber: Chromatomyia cf syngenesiae
2b pupation outside the mine: Liriomyza pusilla
Not included in the key: Liriomyza trifolii.