Tithonia
Dichotomous table for leafminers
1a Large blotch: Calycomyza humeralis
1b long gallery => 2
1c galls, etc. => Tables for all parasites per species
2a gallery usually ends in a secundary blotch: Liriomyza pusilla
2b gallery as a rule not ending in a secondary blotch: Liriomyza trifolii