Erodium heron’s bill
(For a dichotomous table for galls on Erodium by Hans Roskam click here)Dichotomous table for leafminers
1a fleck mine: small, full depth blotch without frass, with a relatively opening by which the larvae has accessed the leaf tissue => 2
1b no fleck mine, but a corridor or blotch with clear amounts of frass => 4
1c galls, etc => Tables for all parasites per species
Dichotomous table for leafminers
1a fleck mine: small, full depth blotch without frass, with a relatively opening by which the larvae has accessed the leaf tissue => 2
1b no fleck mine, but a corridor or blotch with clear amounts of frass => 4
1c galls, etc => Tables for all parasites per species
2a larva mines from a helicoidal case => 3
2b larva does not mine from a case: Aricia agestis
3a suture between the windings of the case very shallow: Apterona gracilis
3b suture normal, deep: Apterona helicoidella
4a the oviposition spot, where the mine begins, covered by a drop of dried secretion: Habroloma triangulare
4b no such drop => 5
5a mine small; larva with legs and chitinised head; the older larva lives free among spun leaves: Cnephasia incertana
5b mine not remarkably small; the larva, a maggot, mines all its life => 6
6a species of the Canary Islands: Agromyza erodii
6b species of continental Europe: Agromyza nigrescens