Omphalodes blue-eyed mary
Dichotomous table for leafminers
1a corridor from start to end => 2
1b eventually a large blotch: Agromyza abiens
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 never pinnately, branched: Chromatomyia horticola