1a mine associated with the midrib => 2

1b mine not associated with the midrib => 3

1c gallen etc. => Tables for all parasites per host plant species

2a ± pinnately branched gallery, main branch on top of the midrib: Liriomyza strigata

2b mine begins as a tunnel within the midrib; from this tunnel blotches are made in the leaf lamina: Scrobipalpa costella

3a larva a seemingly headless maggot => 4

3b larva a caterpillar, with prominent head and feet => 5

4a primary blotch: Pegomya hyoscyami

4b gallery, sometimes last section forming a secondary blotch: Liriomyza bryoniae

5a glass clear blotch mine; rear end of older larvae often protruding from the mine: Acrolepia autumnitella

5b brownish bloch; older larvae do not mine any more: Scrobipalpa costella