1a fleck mine: Coleophora micromeriae

1b mine of another type => 2

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

2a gallery, descending via the petiole down the stem: Glaucolepis saturejae

2b mine does not descend down the stem => 3

3a corridor, then a blotch: Stephensia cedronellae

3b corridor from start to end: Glaucolepis micromeriae