organ parasitic mode stage note taxonomic group parasite
flower gall Eriophyidae Stenacis triradiata
stem vagrant Aphididae Aphis craccivora
leaf vagrant Aphididae Chaitophorus capreae
stem vagrant Aphididae Chaitophorus vitellinae
leaf vagrant Aphididae Chaitophorus niger
leaf bud gall Cecidomyiidae Rabdophaga rosaria
leaf bud gall Eriophyidae Aculus gemmarum
leaf down Erysiphales Phyllactinia populi
leaf leaf spot Venturiales Venturia saliciperda
leaf gall Cecidomyiidae Rabdophaga nervorum
leaf gall Cecidomyiidae Rabdophaga salicis
leaf gall Cecidomyiidae Rabdophaga terminalis
leaf gall Eriophyidae Aculus magnirostris
leaf gall Tenthredinidae Euura proxima
leaf gall Tenthredinidae Euura testaceipes
leaf gall Tenthredinidae Euura oblita
leaf gall Triozidae Bactericera salicivora
leaf gall Triozidae Bactericera albiventris
leaf miner Coleophoridae Coleophora lusciniaepennella
leaf miner Curculionidae Isochnus sequensi
leaf miner Curculionidae Rhamphus pulicarius
leaf miner Gracillariidae Caloptilia stigmatella
leaf miner Gracillariidae Phyllocnistis saligna
leaf miner Gracillariidae Phyllonorycter pastorella
leaf miner Gracillariidae Phyllonorycter salictella
leaf miner Nepticulidae Ectoedemia intimella
leaf miner Nepticulidae Stigmella nivenburgensis
leaf miner Nepticulidae Stigmella obliquella
leaf miner Nepticulidae Stigmella salicis
stem gall Aphididae Tuberolachnus salignus
stem gall Santalaceae Viscum album
stem vagrant Aphididae Pterocomma pilosum
leaf vagrant Aphididae Chaitophorus niger
leaf vagrant Aphididae Chaitophorus truncatus
leaf vagrant Aphididae Chaitophorus horii beuthani
stem vagrant Aphididae Pterocomma rufipes
stem vagrant Aphididae Pterocomma salicis
stem vagrant Aphididae Aphis farinosa
leaf vagrant spring generation Aphididae Cavariella archangelicae
leaf vagrant spring generation Aphididae Cavariella aegopodii
leaf vagrant Aphididae Aphis spiraecola
leaf vagrant spring generation Aphididae Cavariella theobaldi

Organ

the part of the plant that most conspicuously is hit by the parasite

all buds: both flower buds and leaf buds
flower: also inflorescence
leaf: also needle, phyllodium, petiole
leaf bud: also unfolding young leaf
fruit: also seed
root: also root stock, runners
root collar: also the lowest part of the stem
stem: also culm, the lower part of the peduncle, in grasses also leaf sheath
systemic: the entire above-ground plant.

PARASITIC MODE

borer: larva living internally, almost no outwards signs
down: 0.5-2 mm high fungal down
film: very thin cover of fungal tussue
gall: swelling and/or malformation
grazer: feeding at the outside of the plant
leaf spot discoloured, often ± necrotic, generally not galled, sign of a fungus infection
miner-borer: larve initially makes a mine, lives as a borer later
pustule: plug of fungal tissue, generally brown-black and < 2 mm
stripe: longitudinal line of fungal tissue in a grass leaf
vagrant: (aphids, mites) living freely on the plant, at higher densitiy causing malformations.

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IMPORTANT

The host plant spectre of a parasite is rarely known exhaustively; this applies in particular at the species level. It is advisable therefore to check at least also the list of all parasites of this genus.

 

mod 10.viii.2018