Plant Parasites of Europe

leafminers, galls and fungi

genus Knautia

organparasitic modestagenotetaxonomic groupparasite
flowerhiddenThripidaeThrips vulgatissimus
leafvagrantTenthredinidaeTenthredo schaefferi
leafvagrantCimbicidaeAbia mutica
leafvagrantTenthredinidaeMacrophya recognata
leafvagrantCimbicidaeAbia fulgens
leafvagrantCimbicidaeAbia sericea
leafvagrantTenthredinidaeMacrophya erythrocnema
leafvagrantCimbicidaeAbia candens
rootscalePseudococcidaeAtrococcus cracens
leafhiddendoubtfulDepressariidaeAgonopterix kaekeritziana
flowerborerPyralidaeEurhodope cirrigerella
unknownunknowndoubtfulPyralidaeEpischnia prodromella
flowerhiddenThripidaeThrips atratus
leafmineryounger larvaTortricidaeCnephasia stephensiana
leafhiddenolder larvaTortricidaeCnephasia stephensiana
rootborerTortricidaeEndothenia oblongana
flowerborerTortricidaeCochylis flaviciliana
root collarborerTortricidaeSelenodes karelica
rootborerTortricidaeAgapeta zoegana
rootborerTortricidaeAethes hartmanniana
leafvagrantEriophyidaeEpitrimerus knautiae
flowerborerPterophoridaeStenoptilia bipunctidactyla
flowerboreryounger larvaAdelidaeNemophora metallica
flowerborerAdelidaeNemophora cupriacella
leafminerAgromyzidaeChromatomyia horticola
stemminerAgromyzidaeOphiomyia longilingua
systemicborerAnguinidaeDitylenchus dipsaci
flowerdownPeronosporalesPeronospora violacea
flowergallCecidomyiidaeContarinia dipsacearum
flowergallMicrobotryalesMicrobotryum flosculorum
flowergallMicrobotryalesMicrobotryum scabiosae
flowervagrantspring generationAphididaeAphis confusa
leaf budgallCecidomyiidaeJaapiella knautiae
leaf budgallEriophyidaeAceria squalida
leafdownErysiphalesErysiphe knautiae
leafdownErysiphalesPodosphaera dipsacacearum
leafdownPeronosporalesPeronospora knautiae
leafleaf spotCapnodialesRamularia tricherae
leafgallTriozidaeTrioza munda
leafminerAgromyzidaeAulagromyza similis
leafminerAgromyzidaeChromatomyia ramosa
leafminerAgromyzidaeChromatomyia scabiosarum
leafminerAgromyzidaeChromatomyia succisae
leafminerAgromyzidaeLiriomyza strigata
leafminerAgromyzidaeAgromyza woerzi
leafminerdoubtfulBuprestidaeTrachys subglaber
leafminerBuprestidaeTrachys troglodytes
leafminerDepressariidaeAgonopterix arenella
leafpustuleChytridialesSynchytrium succisae
leafpustuleaeciaPuccinialesAecidium succisae
leafvagrantsummer generationAphididaeAphis confusa
stemgallAsterolecaniidaePlanchonia arabidis
leafvagrantAphididaeAulacorthum knautiae
leafvagrantAphididaeAulacorthum sedens
leafvagrantAphididaeOvatomyzus boraginacearum
stemvagrantsummer generationAphididaeMacrosiphum rosae
root collarvagrantrarelyAphididaeAphis thomasi
leafvagrantAphididaeMacrosiphum knautiae


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 23.iv.2020