Plant Parasites of Europe

leafminers, galls and fungi

Arctium tomentosum

woolly burdock, downy burdock

synonym: Lappa tomentosa

organ parasitic mode stage note taxonomic group parasite
stem borer Noctuidae Gortyna flavago
leaf vagrant Pterophoridae Porrittia galactodactyla
root collar borer Apionidae Ceratapion onopordi
leaf miner Depressariidae Agonopterix arenella
leaf vagrant Eriophyidae Aceria lappae
flower borer Gelechiidae Metzneria lappella
leaf vagrant summer generation Aphididae Aphis fabae fabae
leaf miner Agromyzidae Chromatomyia horticola
fruit gall Tephritidae Terellia tussilaginis
flower borer Tephritidae Chaetostomella cylindrica
flower gall Tephritidae Tephritis bardanae
leaf down Erysiphales Golovinomyces depressus
leaf down Erysiphales Leveillula lappae
leaf down Peronosporales Bremia lactucae
leaf leaf spot Capnodiales Ramularia abscondita
leaf miner Agromyzidae Phytomyza lappae
leaf miner Agromyzidae Phytomyza lappivora
leaf miner Anthomyiidae Pegomya laticornis
leaf pustule uredinia telia Pucciniales Puccinia bardanae
leaf vagrant summer generation Aphididae Brachycaudus cardui
leaf vagrant summer generation Aphididae Aphis fabae
root collar vagrant Aphididae Dysaphis lappae lappae
leaf vagrant summer generation Aphididae Aphis fabae mordvilkoi


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.


Last modified 10.ix.2021