Lycopsis annual bugloss, small bugloss
Dichotomous table for leafminers
1a gallery from start to end; frass in isolated grains; pupation within the mine, in a, generally lower-surface, pupal chamber: Chromatomyia horticola
1b short gallery, soon widening in (and usually completely run over by) in a large brown blotch; frass in complicated fragments like barbed wire; pupation external: Agromyza abiens
1c galls, etc => Tables for all parasites per species
* Lycopsis is generally synonymised with Anchusa, but The Plant List (2013) considers it a separate genus.