Plant Parasites of Europe

leafminers, galls and fungi

Thlaspi arvense

field penny-cress

organ parasitic mode stage note taxonomic group parasite
root collar vagrant Anthomyiidae Delia floralis
leaf leaf spot Dothideomycetes incertae sedis Asteromella thlaspeos
leaf vagrant Pentatomidae Eurydema ventralis
leaf vagrant Pentatomidae Eurydema oleracea
fruit vagrant Pieridae Anthocharis cardamines
leaf vagrant Pieridae Pieris brassicae
leaf vagrant Pieridae Pieris rapae
leaf vagrant Pieridae Pieris napi
stem gall rarely Curculionidae Ceutorhynchus pectoralis
fruit borer larva Curculionidae Ceutorhynchus typhae
leaf miner Chrysomelidae Phyllotreta nemorum
flower hidden Crambidae Evergestis extimalis
stem gall Curculionidae Ceutorhynchus griseus
stem gall Curculionidae Ceutorhynchus hirtulus
fruit borer larva Curculionidae Ceutorhynchus similis
unknown unknown Curculionidae Aulacobaris janthina
stem borer Chrysomelidae Psylliodes chrysocephala
leaf hidden Thripidae Thrips tabaci
leaf vagrant Triozidae Bactericera nigricornis
stem borer larva Curculionidae Ceutorhynchus sophiae
fruit borer larva Curculionidae Ceutorhynchus granulicollis
stem borer Curculionidae Ceutorhynchus sulcicollis
fruit gall Cecidomyiidae Contarinia thlaspeos
flower gall Cecidomyiidae Contarinia nasturtii
leaf down Erysiphales Erysiphe cruciferarum
leaf down Peronosporales Hyaloperonospora thlaspeos-arvensis
leaf gall Aphididae Brevicoryne brassicae
leaf gall Curculionidae Ceutorhynchus chalibaeus
leaf miner Curculionidae Ceutorhynchus minutus
leaf miner Drosophilidae Scaptomyza flava
leaf pustule Albuginales Albiginaceae Albugo candida
leaf pustule aecia Pucciniales Puccinia isiacae
leaf pustule telia Pucciniales Puccinia thlaspeos
leaf vagrant Aphididae Lipaphis erysimi
root collar gall Curculionidae Ceutorhynchus assimilis
root gall Heteroderidae Heterodera avenae
root gall Heteroderidae Heterodera goettingiana


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 18.v.2023