1a upper-surface blotch: cf. Amauromyza labiatarum

1b full depth blotch (Eastern Mediterranean): Cnephasia lineata

1c upper-surface corridor => 2

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

2a pinnately branched corridor; main axis overlying the midrib: Liriomyza strigata

2b corridor not pinnately branched, not associated with the midrib; sometimes a secondary blotch: Liriomyza bryoniae