Erechtites fireweed, burnweed
Dichotomous table for leafminers
1a frass in isolated granules; pupation within the mine: Phytomyza cf syngenesiae
1b most frass in pearl chains or thread fragments; pupation external => 2
1c galls, etc. => Tables for all parasites per species
2a gallery pinnately branced; main and side branches on top of midrib and lateral veins: Liriomyza strigata
2b gallery independent of the leaf venation: Liriomyza trifolii