1a fleck mine, larva mines from a case: Coleophora lixella

1b corridor or blotch, larva within the mine => 2

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

2a larva with chitinised head => 3

2b larva a maggot => 5

3a larva widest in the thorax; prosternum with a sclerotised plate => 4

3b larve widest in the abdomen; no prosternal plate present: Cosmopterix orichalcea

4a larva : head almost colourless; mountain species: Elachista dimicatella

4b head pale brown; lowland species: Elachista humilis

5a puparium in the mine => 6

5b pupation outside the mine: Liriomyza flaveola

6a frass in rather widely spaced grains; puparium orange-brown, front spiracula penetrating the epidermis: Chromatomyia nigra

6b frass in greenish swaths; puparium metallic black, front spiracula not penetrating: Cerodontha incisa