Hypericum st john’s-wort
Incl. Webbia.
(For a dichotomous table for galls on Hypericum by Hans Roskam click here)
Dichotomous table for leafminers
1a mine small, of indefinite shape, not starting at an egg shell; the older larva lives free, among spun leaves => 2
1b mine not particularly small, a corridor, blotch, or a combination, always starting at an egg shell (not always easily visible); the larva either mines all its life, or ends living in a folded leaf margin => 4
1c galls, etc => Tables for all parasites per species
Dichotomous table for leafminers
1a mine small, of indefinite shape, not starting at an egg shell; the older larva lives free, among spun leaves => 2
1b mine not particularly small, a corridor, blotch, or a combination, always starting at an egg shell (not always easily visible); the larva either mines all its life, or ends living in a folded leaf margin => 4
1c galls, etc => Tables for all parasites per species
2a larva: behind/below the anus a chitinous comb => 3
2b anal comb absent: Cnephasia incertana
3a larva: pinacula lighter than the integument: Cnephasia longana
3b pinacula black: Cnephasia asseclana
4a tentiform mine; the older larva lives in a folded leaf margin => 5
4b no tentiform mine; life long miners => 6
5a species of Madera and the Canary Islands: Caloptilia aurantiaca
5b species of continental Europe: Euspilapteryx auroguttella
6a blotch, without a trace of an initial corridor: Leucoptera lustratella
6b initial corridor always present, albeit sometimes overrun by the later blotch => 7
7a initial corridor epidermal, with little frass => 5
7b initial corridor deep, almost stuffed with frass => 8
8a pupation external; species of the Canary Islands: Fomoria variicapitella
8b pupation in a cocoon within the mine; species of continental Europe => 9
9a egg at the upper side of the leaf: Fomoria luisae
9b egg at the lower side => 10
10a species of Greece: Fomoria deschkai
10b species of entire Europe (Greece included!): Fomoria septembrella
Not included in the key (egg position not known): Fomoria empetrifolii, eriki.