Forsythia
Dichotomous table for leafminers
1a 1-2 cm corridor-like mines, larvae mostly dead already: Gracillaria syringella
1b fleck mine: Coleophora serratella
1c galls, etc => Tables for all parasites per species
mod 9.x.2017
1a 1-2 cm corridor-like mines, larvae mostly dead already: Gracillaria syringella
1b fleck mine: Coleophora serratella
1c galls, etc => Tables for all parasites per species