Honckenya sea sandwort
(For a dichotomous table for galls on Honckenya by Hans Roskam click here)
Dichotomous table for leafminers
1a the larva migrates from one leaf to the other by boring through the stem: Delia quadripila
1b the larva makes a blotch in a single leaf => 2
1c galls, etc => Tables for all parasites per species
Dichotomous table for leafminers
1a the larva migrates from one leaf to the other by boring through the stem: Delia quadripila
1b the larva makes a blotch in a single leaf => 2
1c galls, etc => Tables for all parasites per species
2a frass as not very numerous, black granules: Amauromyza flavifrons
2b frass powdery, in green clouds, often visible only after opening the mine: Scaptomyza graminum