Borago borage

Dichotomous table for leafminers

1a mine very small, of indefinite shape = > 2

1b mine not unusually small, of constant shape => 3

1c galls, etc => Tables for all parasites per species

2a larva: below/behind the anus a chitinous comb: Cnephasia asseclana

2b anal comb absent: Cnephasia stephensiana

3a corridor from start to end: Chromatomyia horticola

3b eventually a large blotch => 2

4a initial corridor both very long and narrow; pupation within the mine; larva with recognisable head: Dialectica scalariella

4b initial corridor different; pupation external; larva a maggot => 5

5a larva solitary (always?): Agromyza myosotidis

5b larvae communal: Agromyza abiens

Not included in the key: Delia seideli.

Tables for all parasites per species

mod 9.x.2017