Draba, whitlow grass

fam. Brassicaceae

1a mine, when held against the light, with lighter and darker patches; larva a maggot: Scaptomyza flava

1b mine regularly full depth; larva with sclerotised head => 2

1c galls, etc => 100

2a mine a more or less branching corridor; larva without feet: Ceutorhynchus minutus

2b mine blotchy in the end; larva with thoracic feet: Phyllotreta nemorum

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: Aceria drabae; Cecidophyes borealis

103 – Coleoptera

103a Curculionidae: Ceutorhynchus atomus

107 – rust fungi

107a Pucciniaceae: Puccinia drabae, thlaspeos

108 – smut fungi

108a Fungi, Glomosporiaceae: Thecaphora thlaspeos

109 – powdery and downy mildews

109a Erysiphaceae: Erysiphe cruciferarum; Podosphaera drabae

109b Peronosporaceae: Hyaloperonospora drabae, norvegica

110 – andere veroorzakers

110a Fungi, Albuginaceae: Albugo candida

110b Fungi, Plasmodiophoraceae: Plasmodiophora brassicae

110c Fungi, Synchytriaceae: Synchytrium drabae

04/12/2016