Althaea marsh-mallow
incl. Dinacrusa.
Dichotomous table for leafminers
1a fleck mine; larva mines from a helicoidal case: Apterona helicoidella
1b blotch mine; oviposition site covered by a black shining drop of dried secretion: Trachys troglodytiformis
1c corridor mine => 2
1d galls, etc => Tables for all parasites per species
2a pupation in the mine, in a, usually lower-surface, pupal chamber: Chromatomyia horticola
2b before pupation the mine is vacated through a semicircular exit slit: Liriomyza xanthocera