Plant Parasites of Europe

leafminers, galls and fungi

Chenopodium bonus-henricus


organ parasitic mode stage note taxonomic group parasite
leaf hidden Tortricidae Celypha lacunana
leaf hidden Scythrididae Scythris limbella
leaf leaf spot Phyllostictaceae Phyllosticta ambrosioidis
leaf leaf spot Mycosphaerellaceae Cercospora chenopodii
leaf leaf spot Capnodiales Ramularia macularis
leaf vagrant doubtful Noctuidae Athetis lepigone
leaf vagrant Noctuidae Trachea atriplicis
flower vagrant Geometridae Eupithecia simpliciata
flower vagrant Geometridae Eupithecia sinuosaria
leaf hidden Heliodinidae Heliodines roesella
leaf vagrant summer generation Aphididae Aphis fabae fabae
leaf vagrant summer generation Aphididae Aphis fabae
leaf down Peronosporales Peronospora boni-henrici
leaf leaf spot Diaporthales Ascochyta caulina
leaf gall Aphididae Hayhurstia atriplicis
leaf gall Triozidae Heterotrioza chenopodii
leaf miner Anthomyiidae Pegomya betae
leaf miner Anthomyiidae Pegomya hyoscyami
leaf miner Gelechiidae Chrysoesthia drurella
leaf miner Gelechiidae Chrysoesthia sexguttella


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 9.ii.2023