Umbilicus pennywort, navelwort
Incl. Cotyledon.
Dichotomous table for leafminers
1a mine small; older larva free among spun leaves: Cnephasia incertana
1b mine not unusually small; larva mines all its life => 2
1c galls, etc => Tables for all parasites per species
2a mine in the end a primary or secondary blotch => 3
2b mine a corridor until the end => 6
3a larva a maggot => 4
3b larva with thoracic feet and a sclerotised head => 5
4a mine very shallow, almost invisible in transparancy; pupation as a rule within the mine: Phytomyza sedicola
4b mine deep, transpatrant; pupation outside the mine: Cheilosia semifasciata
5a leaf strongly disfigured by the mine; larva grey: Cnephasia lineata
5b leaf not disfigured; larva pale yellow: Glyphipterix umbilici
6a corridor very narrow; frass in pearl strings; larva a maggot: Liriomyza umbilici
6b corridor coarser; frass sometimes in a loose central line, sometimes locally absent; larva with chitinised head: Orthochaetes insignis