Scutellaria skullcap

Dichotomous table for leafminers

1a pinnately branched gallery, its branches on top of the main leaf veins: Liriomyza strigata

1b (at least ultimately) a blotch mine => 2

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

2a full depth irregular blotch without initial corridor; larvae later live between spun leaves => 3

2b large blotch, preceded by a long narrow corridor (often overrun by the later blotch, but in transparency recognisable in the frass pattern) => 4

3a larva: head almost uniformly pale brown: Prochoreutis mylleriana

3b rear margin of head with a brown mark in the shape of a w: Prochoreutis sehestediana

4a frass in the corridor part in a broad green central band, with tiny black granules at either side: Amauromyza labiatarum

4b frass in the corridor in black grains or thread fragments => 5

5a frass in the entire corridor as neat thread fragments, alternating along the sides: Amauromyza lamii

5b frass in the corridor in shorter, untidily arranged thread fragments; towards the end more in grains: Amauromyza morionella

Pakalniškis (1998c) reported from Scutellaria galericulata two evident leaf mines of Ophiomyia labiatarum. This species normally lives as a stem borer.

mod 1.i.2019