Origanum marjoram
Incl. Majorana
(For a dichotomous table for galls on Origanum by Hans Roskam click here)
Dichotomous table for leafminers
1a fleck mine => 2
1b corridor and/or blotch => 3
1c galls, etc => Tables for all parasites per species
Dichotomous table for leafminers
1a fleck mine => 2
1b corridor and/or blotch => 3
1c galls, etc => Tables for all parasites per species
2a brownish black sheath case: Coleophora albitarsella
2b composite leaf case: Coleophora pennella
3a corridor at first, later widenend into a full depth primary blotch; the larvae may move, makes then only blotches; larva with thoracic feet and chitinised head: Stephensia brunnichella
3b upper- or lower-surface corridor and/or secondary blotch => 4
4a larva with thoracic feet: Apteropeda orbiculata
4b larva a legless maggot => 5
5aa corridor, never forming a secondary blotch: Chromatomyia horticola
5b a secondary blotch, usually in the leaf tip: Phytomyza origani