organ parasitic mode stage note taxonomic group parasite
leaf vagrant summer generation Aphididae Capitophorus elaeagni
leaf vagrant Aphididae Myzus ascalonicus
leaf vagrant summer generation Aphididae Brachycaudus cardui
leaf down doubtful Erysiphales Golovinomyces senecionis
leaf miner Agromyzidae Liriomyza strigata
leaf miner Agromyzidae Phytomyza alpina
leaf miner Agromyzidae Phytomyza buhriella
leaf miner Agromyzidae Phytomyza farfarae
leaf miner Agromyzidae Phytomyza tussilaginis
leaf miner Gelechiidae Scrobipalpula tussilaginis
leaf miner Pterophoridae Platyptilia gonodactyla
leaf miner Sciaridae Phytosciara macrotricha
leaf miner Tephritidae Stemonocera cornuta
leaf miner Tephritidae Trypeta zoe
leaf miner Tephritidae Acidia cognata
leaf miner Tortricidae Cnephasia asseclana
leaf miner Tortricidae Cnephasia incertana
leaf miner Tortricidae Cnephasia stephensiana
leaf pustule Chytridiales Synchytrium aureum
leaf pustule aecia Pucciniales Puccinia petasites-pendulae
leaf pustule aecia Pucciniales Puccinia poarum
leaf pustule uredinia telia Pucciniales Coleosporium tussilaginis
leaf vagrant Eriophyidae Aceria tussilagofoliae
root collar vagrant summer generation Aphididae Anuraphis farfarae
root vagrant Aphididae Trama troglodytes
root vagrant summer generation Aphididae Pemphigus bursarius
leaf vagrant Aphididae Uroleucon tussilaginis
leaf vagrant Aphididae Uroleucon tussilaginis
stem vagrant rarely Aphididae Acyrthosiphon pisum
leaf vagrant summer generation Aphididae Capitophorus similis
root vagrant Aphididae Aphis vandergooti

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 26.i.2019