Rudbeckia coneflower, blackeyed susan

Dichotomous table for leafminers

1a several small, roundish, full depth, mines in a leaf; larva with chitinised head: Phytosciara macrotricha

1b a single, upper- or lower-surface corridor of several cm length; larva a maggot => 2

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

2a corridor pinnately branched, main and side branches on top of midrib and side veins; pupation outside the mine: Liriomyza strigata

2b corridor little, irregularly, branched; pupation within the mine, in a, generally lower-surface, pupal chamber: Chromatomyia cf syngenesiae

mod 9.x.2017