Cytisophyllum
Dichotomous table for leafminers
1a blotch mine; larva a caterpillar => 2
1b tentiform mine: Phyllonorycter phyllocytisi
1c galls, etc => Tables for all parasites per species
2a much frass, in concentric circles: Leucoptera coronillae
2b almost no frass: Micrurapterix kollariella