1a larvae mine all their life => 2

1b older larvae live free => 5

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

2a pupation within the mine => 3

2b pupation outside the mine => 4

3a larva a maggot; mine finally a primary blotch: Phytomyza phillyreae

3b larva with thoracic feet and chitinised head; mine finally a secondary blotch: Metriochroa latifoliella

4a large blotch with copious frass: Silliana lhommei

4b narrow corridor almost without frass: Cacophyia permixtella

5a young larva makes an epidermal, silvery corridor, widening into a weakly contrated tentiform mine: Caloptilia cucullipennella

5b you larvae live differently => 6

6a young larvae in a, usually communal, blotch; later they live in a leaf roll: Gracillaria syringella

6b young larvae make full depth corridors, or blotches, or a combination of the two; later they cause window feeding: Prays oleae