1a fleck mine => 2

1b blotch => 3

1c galls, etc => Tables for all parasites per species

2a case, immediately behind the mouth narrowed and somewhat bent: Coleophora lixella

2b case gradually widening behind the mouth, not bent: Coleophora ornatipennella

3a the mines of the following species are insufficiently diagnostic, and the larvae of many are not well known; a key cannot be made: Elachista albifrontella, argentella, baltica, herrichi, ozeini, triseriatella