organ parasitic mode stage note taxonomic group parasite
stem borer Gelechiidae Monochroa niphognatha
flower hidden Thripidae Frankliniella intonsa
leaf bud vagrant Eriophyidae Aceria sawatchense
leaf gall Aphrophoridae Philaenus spumarius
unknown vagrant larva Curculionidae Neophytobius granatus
root collar borer larva Curculionidae Rhinoncus bruchoides
root collar borer larva Curculionidae Rhinoncus bosnicus
leaf vagrant larva Curculionidae Pelenomus waltoni
leaf vagrant larva Curculionidae Pelenomus quadrituberculatus
leaf vagrant larva Curculionidae Pelenomus quadricorniger
unknown vagrant larva doubtful Curculionidae Neophytobius muricatus
unknown vagrant larva doubtful Curculionidae Neophytobius quadrinodosus
stem borer larva Curculionidae Rhinoncus albicinctus
stem borer larva Curculionidae Rhinoncus perpendicularis
root borer larva Curculionidae Rhinoncus inconspectus
leaf vagrant larva doubtful Curculionidae Pelenomus commari
root gall doubtful Curculionidae Bothynoderes affinis
leaf miner Anthomyiidae Pegomya vanduzeei
root vagrant summer generation Aphididae Aphis sambuci
stem borer Gelechiidae Monochroa hornigi
stem vagrant Aphididae Aphis craccivora
systemic borer Anguinidae Ditylenchus dipsaci
flower gall Microbotryales Sphacelotheca hydropiperis
flower gall Microbotryales Sphacelotheca polygoni-serrulati
flower gall Microbotryales Sphacelotheca serrulati-magna
flower gall Microbotryales Microbotryum cordae
flower gall Microbotryales Microbotryum reticulatum
flower gall Ustilaginales Melanopsichium pennsylvanicum
flower vagrant rarely Aphididae Brachycaudus rumexicolens
leaf down Erysiphales Leveillula taurica
leaf down Peronosporales Peronospora polygoni
leaf leaf spot Capnodiales Ramularia rubella
leaf gall Aphididae Aspidaphis adjuvans
leaf gall Cecidomyiidae Wachtliella persicariae
leaf gall Psyllidae Aphalara borealis
leaf gall Psyllidae Aphalara freji
leaf gall Psyllidae Aphalara maculipennis
leaf miner Anthomyiidae Pegomya bicolor
leaf miner Anthomyiidae Pegomya solennis
leaf miner Chrysomelidae Mantura rustica
leaf miner Gracillariidae Calybites phasianipennella
leaf pustule aecia doubtful Pucciniales Puccinia phragmitis
leaf pustule aecia uredinia telia Pucciniales Uromyces polygoni-avicularis
leaf pustule uredinia telia Pucciniales Puccinia polygoni-amphibii
leaf vagrant summer generation Aphididae Aphis nasturtii
leaf vagrant summer generation Aphididae Brachycaudus amygdalinus
leaf vagrant summer generation Aphididae Capitophorus hippophaes
leaf vagrant Eriophyidae Callyntrotus polygoni
stem down Erysiphales Erysiphe polygoni
stem gall rarely Coleophoridae Augasma aeratella
stem gall doubtful Curculionidae Pelenomus velaris
root gall Heteroderidae Heterodera trifolii
root gall Meloidogynidae Meloidogyne hapla
leaf vagrant summer generation rarely Aphididae Cryptomyzus galeopsidis
leaf vagrant Aphididae Aulacorthum solani
leaf vagrant summer generation Aphididae Aphis fabae
leaf vagrant Aphididae Aphis polygonata


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.


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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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 1.ii.2020