Citrullus watermelon
Dichotomous table for leafminers
1a larva (a maggot): front and rear spiraculum with 7-9 and 7-12 papillae, respectively: Liriomyza bryoniae
1b front and rear spiraculum with 6 and 3 papillae, respectively: Liriomyza trifolii
1c galls, etc. => Tables for all parasites per species