Fallopia *, black bindweed

fam. Polygonaceae

1a large transparant blotch containing several big maggots: Pegomya setaria **

1b mine smaller; larvae with chitinised head, solitary => 2

1c galls, etc => 100

2a silvery, epidermal corridor: Calybites phasianipennella (youth mine)

2b mine full depth => 3

3a square, brownish, weakly inflated tentiform mine; older larvae life free, in a leaf roll: Calybites phasianipennella

3b small (< 1 cm) irregular corridor or blotch, mostly with a hole at either end; often several mines in a leaf; older larve live free, causing window feeding: Hypera rumicis

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

101b Meloidogynidae: Meloidogyne hapla

104 – Diptera

104a Cecidomyiidae: Wachtliella persicariae

105 – Hemiptera

105a Aphididae: Aphis fabae solanella

107 – rust fungi

107a Pucciniaceae: Puccinia phragmitis, polygoni

108 – smut fungi

108a MicrobotryaceaeMicrobotryum anomalum

109 – powdery and downy mildews

109a Erysiphaceae: Erysiphe polygoni

109b Peronosporaceae: Peronospora polygoni-convolvuli

110 – other causers

110a Fungi, Synchytriaceae: Synchytrium aureum

110b Lepidoptera, Coleophoridae: Coleophora cecidophorella

* The traditional genus Polygonum has been split into Fallopia (incl. Bilderdykia, Reynoutria), Persicaria, and Polygonum.

** The possibility exists that also Pegomya bicolor and solennis incidentally occur on Fallopia.

Not included in the key: Liriomyza trifolii; Monochroa sepicolella.

25/09/2015