Spiraea bridewort
Dichotomous table for leafminers
1a blotch, from which an excision is made in which the larva drops to the ground: Incurvaria praelatella
1b mine without an excision => 2
1c galls, etc. => Tables for all parasites per species
2a fleck mine: Coleophora potentillae
2b corridor, blotch, or tentiform mine => 3
3a mine < 1 cm, full depth: : Incurvaria praelatella (young mine)
3b mine larger, upper-surface => 4
4a silvery blotch, eventually a contracted tentifom mine; larva with chitinised head: Phyllonorycter corylifoliella
4b mine greenish, flat; larva a maggot: Agromyza spiraeoidearum
Not included in the key: Coleophora hemerobiella, serratella, spiraeella; Ectoedemia spiraeae; Fenella nigrita; Parornix mixta; Stigmella inopinata.