Malcolmia, virginian stock

fam. Brassiceae

1a pinnately branched gallery, main and secondary branches on top of midrib and side veins: Liriomyza strigata

1b blotch or little, not pinnately branched, gallery; mine not determined by the leaf venation => 2

1c galls, etc => 100

2a larvae are maggots; mine entirely or partly upper- or lower-surface: Scaptomyza flava

2b larvae with chitinised head; mine full depth => 3

3a larva with abdominal prolegs => 4

3b no prolegs => 5

4a mines < 1 cm; older larvae live free at the underside of the leaf: Plutella xylostella

4b mines larger: Selania leplastriana malcolmiae

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

105 – Hemiptera

105a Aphididae: Brevicoryne brassicae

109 – powdery and downy mildews

109a Erysiphaceae: Erysiphe cruciferarum

110 – other causers

110a Fungi, Albuginaceae: Albugo candida

110b Fungi, Plasmodiophoraceae: Plasmodiophora brassicae


pub 30.vii.2016 ยท mod 5.viii.2017