Pimpinella burnet saxifrage
(For a dichotomous table for galls on Pimpinella by Hans Roskam click here)
Dichotomous table for leafminers
1a mine < 1 cm, full depth, often in numbers together in a leaf axil; larvae, with distinct feet and chitinised head, later live free and cause extensive window feeding: Epermenia chaerophyllella
1b mine > 1 cm, not full depth; larva a maggot => 2
1c galls, etc => Tables for all parasites per species
Dichotomous table for leafminers
1a mine < 1 cm, full depth, often in numbers together in a leaf axil; larvae, with distinct feet and chitinised head, later live free and cause extensive window feeding: Epermenia chaerophyllella
1b mine > 1 cm, not full depth; larva a maggot => 2
1c galls, etc => Tables for all parasites per species
2a primary blotch with conspicuous primary and secondary feeding lines; larva: rear spiracula with 3 papillae: Euleia heraclei & Cryptaciura rotundiventris
2b corridor or secondary blotch, at least without secondary feeding lines; rear spiracula with > 3 papillae => 3
3a yellowish green, later red brown, perforate, interparenchymatic blotch: Phytomyza heracleana (occurrence on this host needs confirmation)
3b mine not perforate or inter-parenchymal => 4
4a corridor (very narrow at start, at least locally with parallel margins); may be fairly broad sometimes => 5
4b blotch (broad from the start, nowhere with parallel margins); may be elongated => 7
5a puparium in the mine, usually in an lower-surface pupal chamber: Chromatomyia horticola
5b larva leaves the mine prior to pupation => 6
6a mine with the narrow initial part long, then suddenly widened; widened part along the leaf margin; larva with frontal appendage: Phytomyza adjuncta
6b narrow initial part short, then suddenly widened; widened part not associated with leaf margin; frontal appendage absent: Phytomyza melana
7a blotch irregularly elongate, along the leaf margin; anterior spiraculum bifid: Phytomyza pimpinellae
7b blotch rounded, in the the centre of the leaflet; anterior spiraculum fist shaped: Phytomyza pauliloewii
Not included in the key: Cnephasia incertana; Epermenia aequidentellus; Sophronia humerella.