Potentilla cinquefoil
Incl. Argentina anserina. Also Duchesnea indica, the mock strawberry, is currently included in Potentilla. See also Comarum and Drymocallis. For Potentilla fruticosa see Dasiphora.
Dichotomous table for leafminers
1a blotch, no trace of a preceding corridor => 2
1b corridor, may widen into a blotch => 6
1c fleck mine; larva in a lobe case => 15
1d galls, etc. => Tables for all parasites per species
2a the blotch soons turns into an elliptic excision: Incurvaria praelatella
2b no excision is made => 3
3a mine tiny; larva yolk-yellow: Spialia sertorius
3b mine larger; larva not yellow => 4
4a on the oviposition spot, usually near the leaf margin, a shining black drop of dried secretion: Trachys fragariae
4b no such drop => 5
5a larva: no claw at the end of the feet; common species: Fenella nigrita
5b the feet end in a distinct claw; only known from Hungary on P. cinerea: Fenella arenariae
6a mine begins at a globular, shining egg shell => 7
6b no egg shell visible => 13
7a mine begins with a strongly contorted corridor: Ectoedemia arcuatella
7b initial corridor not contorted => 8
8a mine remains a gallery till the end => 9
8b gallery widens into an irregular, often large, blotch => 11
9a egg at the underside of the leaf: Stigmella thuringiaca
9b egg at the upperside (rarely underside, but the gallery then very slender) => 10
10a frass in the first section of the gallery diffuse, greyish green: Stigmella anomalella
10b frass black and granular, also in the first section: Stigmella splendidissimella
11a egg at the upperside: Stigmella poterii
11b egg at the underside => 12
12a lowland species: Stigmella aeneofasciella
12b always, or almost always, high in the mountains: Stigmella stelviana (always) & Stigmella tormentillella (almost always)
13a initial corridor short, quickly widening; mine full depth; larva with chitinised head => 5
13b initial corridor longer and/or widening more slowly; mine upper- or lower-surface; larva a maggot => 14
14a frass in the corridor part in two rows of grains; larva: rear spiraculum with 3 papillae: Agromyza idaeiana
14b initial corridor almost full of frass; rear spiraculum with 6 papillae: Agromyza sulfuriceps
15a case helicoidal; opening of the mine not neatly circular: Apterona helicoidella
15b case more or less straight; opening a perfect circle => 16
16a spatulate leaf case: Coleophora albicostella
16b lobe case => 17
17a case brown; lobes of the case cut out of the upper epidermis; mouth angle 0°-10°: Coleophora violacea
17b case whitish; lobes cut out of the lower epidermis; mouth angle 20°-30°: Coleophora potentillae
Not included in the key: Coleophora ahenella, sergiella, vitisella; Sophronia humerella; Tinagma perdicella.