organ parasitic mode stage note taxonomic group parasite
leaf gall Aphrophoridae Philaenus spumarius
leaf scale Aleyrodidae Aleyrodes lonicerae
leaf scale Aleyrodidae Trialeurodes vaporariorum
leaf vagrant summer generation Aphididae Aphis fabae fabae
leaf miner Agromyzidae Chromatomyia horticola
leaf vagrant Aphididae Aphis gossypii
leaf down Erysiphales Fibroidium balsaminae
leaf down Erysiphales Leveillula taurica
leaf down Erysiphales Oidiopsis balsaminae
leaf down Erysiphales Podosphaera balsaminae
leaf down Erysiphales Podosphaera xanthii
leaf down Peronosporales Plasmopara destructor
leaf down doubtful Peronosporales Plasmopara obducens
leaf down Peronosporales Plasmopara velutina
leaf gall summer generation Aphididae Semiaphis noli-tangere
leaf miner Agromyzidae Phytoliriomyza melampyga
leaf miner Tortricidae Cnephasia asseclana
leaf miner Tortricidae Cnephasia incertana
leaf pustule aecia uredinia telia Pucciniales Puccinia komarovii
leaf pustule uredinia telia Pucciniales Puccinia argentata
leaf pustule uredinia telia Pucciniales Cronartium flaccidum
leaf vagrant summer generation Aphididae Aphis fabae
root collar gall Tortricidae Pristerognatha penthinana
root gall Meloidogynidae Meloidogyne arenaria
root gall Meloidogynidae Meloidogyne hapla
root gall Meloidogynidae Meloidogyne incognita
root gall Meloidogynidae Meloidogyne javanica
leaf vagrant summer generation Aphididae Myzus persicae
leaf vagrant Aphididae Impatientinum balsamines
leaf vagrant Aphididae Impatientinum asiaticum
leaf vagrant summer generation Aphididae Brachycaudus helichrysi


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 15.ix.2019