Scrophularia figwort

Dichotomous table for leafminers

1a mine upper- or lower-surface; larva a maggot => 2

1b full depth corridor; larva with chitinised head: Apteropeda orbiculata

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

2a large, pale, upper-surface blotch: Amauromyza verbasci

2b corridor mine => 3

3a corridor pinnately branched, main branch overlying the midrib: Liriomyza strigata

3b corridor free from the midrib, not pinnate => 4

4a puparium in the mine; frass in isolated grains: Chromatomyia horticola

4b pupation outside the mine; frass in thread fragments: Liriomyza bryoniae

Not included in the key: Cnephasia asseclana, incertana; Nothris congressariella.

mod 9.x.2017