Neslia, ball mustard

fam. Brassicaceae

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

1b larva with chitinised head; mine full depth => 3

1c galls, etc => 100

2a frass powdery, in dark green “clouds” in corners of the mine, often visibly only after the mine has been opened: Scaptomyza flava

2b frass in black strings: Liriomyza xanthocera

3a larva with prolegs; older larvae live free => 4

3b no prolegs; larvae mine all their life => 5

4a larva light coloured; older larvae live under the leaf: Plutella xylostella

4b larva dark coloured; older larvae between spun leaves: Cnephasia incertana

5a larva with thoracic legs: Phyllotreta nemorum

5b larva without legs: Ceutorhynchus minutus

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

103 – Coleoptera

103a Curculionidae: >Ceutorhynchus assimilis

105 – Hemiptera

105a Aphididae: Brevicoryne brassicae

109 – powdery and downy mildews

109a Erysiphaceae: Golovinomyces orontii

109a Peronosporaceae: Hyaloperonospora nesliae

110 – other causers

110a Fungi, Albuginaceae: Albugo candida

110b Fungi, Plasmodiophoraceae: Plasmodiophora brassicae


pub 30.vii.2016 · mod 5.viii.2017