Centaurium centaury

Dichotomous table for leafminers

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

1b mine full depth; larva with chitinised head => 4

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

2a pupation in the mine; front spiracula pentrate the epidermis; larva with a frontal appendage => 3

2b pupation external; no frontal appendage: Liriomyza bryoniae

3a frass in strings; larva: anterior arm of the cephalic skeleton entirely sclerotised: Chromatomyia gentianae

3b frass in islolated grains; anterior arm only distally sclerotised: Chromatomyia centaurii

4a larva without feet, without length lines; young mine more or less a corridor with frass in a central line: Orthochaetes insignis

4b larva with feet; older larvae with coloured length lines; young mine already blotchy, with dispersed frass: Stenoptilia zophodactylus

mod 9.x.2017