Plant Parasites of Europe

leafminers, galls and fungi

genus Descurainia

organparasitic modestagenotetaxonomic groupparasite
unknownunknownChrysomelidaePsylliodes cupreata
rootvagrantChrysomelidaePsylliodes cuprea
stemborerChrysomelidaePsylliodes tricolor
leafvagrantChrysomelidaeColaphellus sophiae
rootvagrantChrysomelidaePhyllotreta scheuchi
leafvagrantChrysomelidaeGaleruca jucunda
leafhiddenCrambidaeEvergestis sophialis
leafhiddenCrambidaeEvergestis frumentalis
flowergallEriophyidaeAceria drabae
stemborerlarvaCurculionidaeCeutorhynchus sophiae
stemborerlarvaCurculionidaeCeutorhynchus aeneicollis
unknownborerlarvaCurculionidaeCeutorhynchus pulvinatus
flowerborerlarvaNitidulidaeBrassicogethes salvan
leafvagrantsummer generationAphididaeBrachycaudus helichrysi
leafvagrantsummer generationAphididaeAphis fabae
flowergallCecidomyiidaeContarinia nasturtii
flowergallCecidomyiidaeDasineura sisymbrii
flowergallEriophyidaeAceria drabae
leaf budgallCecidomyiidaeContarinia kiefferi
leaf budgallCecidomyiidaeDasineura bayeri
leafdownErysiphalesErysiphe cruciferarum
leafdownErysiphalesPodosphaera drabae
leafdownPeronosporalesHyaloperonospora sisymbrii-sophiae
leafgallCurculionidaeCeutorhynchus chalibaeus
leafminerCurculionidaeCeutorhynchus minutus
leafpustuleAlbuginales AlbiginaceaeAlbugo candida
leafpustuleaeciaPuccinialesPuccinia isiacae
stemgallCurculionidaeCeutorhynchus rapae
root collargallCurculionidaeCeutorhynchus assimilis
root collargallPlasmodiophoralesPlasmodiophora brassicae
leafgallAphididaeBrevicoryne brassicae

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.

 

Last modified 30.vi.2020