Fagopyrum, buckwheat

fam. Polygonaceae

1a large blotch; larva a maggot: Pegomya bicolor

1b small, irregular mine; larva with sclerotised head => 2

1c galls, etc => 100

2a pinacula colourless (the base of the setae black): Cnephasia incertana

2b pinacula black: Cnephasia asseclana

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

101 – Nematoda

101a Anguinidae: Ditylenchus dipsaci

105 – Hemiptera

105a Aphididae: Brachycaudus rumexicolens

109 – powdery and downy mildews

109a Erysiphaceae: Erysiphe polygoni

109b Peronosporaceae: Peronospora ducometi

25/09/2015