Scutellaria, skullcap

fam. Lamiaceae

1a full depth irregular blotch without initial corridor; larvae later live between spun leaves => 2

1b large blotch, preceded by a long narrow corridor (often overrun by the later blotch, but in transaparancy recognisable in the frass pattern) => 3

1c galls, etc => 100

2a larva: head almost uniformly pale brown: Prochoreutis mylleriana

2b rear margin of head with a brown mark in the shape of a w: Prochoreutis sehestediana

3a frass in the corridor part in a broad green central band, with tiny black granules at either side: Amauromyza labiatarum

3b frass in the corridor in black grains or thread fragments => 4

4a frass in the entire corridor as neat thread fragments, alternating along the sides: Amauromyza lamii

4b frass in the corridor in shorter, untidily arranged thread fragments; towards the end more in grains: Amauromyza morionella

100a Nematoda => 101

100b Acari => 102

100c Coleoptera => 103

100e Diptera => 104

100f Hemiptera => 105

100d Hymenoptera => 106

100g rust fungi => 107

100h smut fungi => 108

100i powdery and downy mildews => 109

100j other causers => 110

102 – Acari

102a Eriophyidae: Aculus scutellariae

109 – powdery and downy mildews

109a Erysiphaceae: Leveillula duriaei, Neoërysiphe galeopsidis

109b Peronosporaceae: Peronospora scutellariae

110 – other causers

110e Fungi, Synchytriaceae: Synchytrium aureum

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

05/06/2016