Alisma, Water-Plantain

Larvae of Chironomidae may tunnel corridors in submerged stems; these are not treated here. (Hering, 1957a, provides a key).

1aa broad corridor widening into a blotch; mine full depth, transparant; larva with chitinised head: Bagous alismatis

1b corridor from begin to end (but may form a secondary blotch), initially lower-surface, later turning upper-surface; larva a maggot: Liriomyza bryoniae

1c one or more short galleries that enter the leaf from the petiole: Hydrellia albiceps, concolor, flavicornis, mutata, viridescens

1d galls, etc => 100

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: Rhopalosiphum nymphaeae

108 – smut fungi

108a Doassansiaceae: Doassansia alismatis

110 – other causers

110a Fungi, Phyosodermataceae: Physoderma maculare

pub 20.xi.2014 ยท mod 28.viii.2017