Plant Parasites of Europe

leafminers, galls and fungi

Centaurea scabiosa

greater knapweed

synonym: Centaurea coriacea

organparasitic modestagenotetaxonomic groupparasite
leafvagrantChrysomelidaeChrysolina fuliginosa
leafhiddenDepressariidaeAgonopterix kaekeritziana
flowerborerGelechiidaeMetzneria neuropterella
leafhiddenCrambidaeSitochroa verticalis
leafhiddenDepressariidaeAgonopterix pallorella
leafhiddenDepressariidaeAgonopterix flurii
flowerborerTortricidaeEucosma fulvana
leafhiddenTortricidaeClepsis senecionana
leafvagrantTortricidaeAphelia viburniana
flowergalllarvaCurculionidaeLarinus planus
leafhiddenTortricidaePhiledonides lunana
leafhiddenTortricidaeCnephasia pasiuana
flowerborerPyralidaeMyelois circumvoluta
flowergallGelechiidaeMetzneria metzneriella
flowerborerGelechiidaeMetzneria aprilella
flowerborerGelechiidaeMetzneria ehikeella
flowerborerlarvaCurculionidaeLarinus sturnus
flowerborerlarvaCurculionidaeLarinus iaceae
flowerborerlarvaCurculionidaeLarinus centaurii
root collarborerApionidaeCeratapion penetrans
unknownborerlarvaApionidaeCeratapion armatum
leafminerlarvaApionidaeCeratapion austriacum
stemvagrantAphididaeUroleucon jaceicola
leafpustuleAlbuginalesPustula spinulosa
leafdownPeronosporalesBremia lactucae
stemborerAgromyzidaeMelanagromyza oligophaga
stemborerAgromyzidaeMelanagromyza dettmeri
fruitgallCynipidaeIsocolus jaceae
fruitgallTephritidaeUrophora quadrifasciata
flowerborerTephritidaeChaetorellia jaceae
flowerborerTephritidaeChaetorellia loricata
flowerborerTephritidaeChaetostomella cylindrica
flowerborerTephritidaeTerellia ceratocera
flowerborerTephritidaeTerellia colon
flowerborerTephritidaeTrupanea stellata
flowergallCecidomyiidaeDasineura miki
flowergallCynipidaeIsocolus rogenhoferi
flowergallTephritidaeUrophora cuspidata
flowergallTephritidaeUrophora lopholomae
leafdownErysiphalesPodosphaera xanthii
leafdownErysiphalesGolovinomyces montagnei
leafdownPeronosporalesBremia centaureae
leafgallCecidomyiidaeLoewiola centaureae
leafgallEriophyidaeAceria centaureae
leafminerAgromyzidaeLiriomyza bessarabica
leafminerAgromyzidaeLiriomyza centaureae
leafminerAgromyzidaeLiriomyza strigata
leafminerAgromyzidaePhytomyza autumnalis
leafminerAgromyzidaePhytomyza cinerea
leafminerColeophoridaeColeophora brevipalpella
leafminerColeophoridaeColeophora conspicuella
leafminerColeophoridaeColeophora didymella
leafminerdoubtfulCurculionidaePseudorchestes cinereus
leafminerCurculionidaePseudorchestes ermischi
leafminerCurculionidaePseudorchestes pratensis
leafminerDepressariidaeAgonopterix arenella
leafminerDepressariidaeAgonopterix subpropinquella
leafminerGelechiidaeScrobipalpa halonella
leafminerGelechiidaeScrobipalpa perinii
leafminerGelechiidaeScrobipalpula psilella
leafminerZygaenidaeJordanita globulariae
leafminerZygaenidaeJordanita graeca
leafminerZygaenidaeJordanita notata
leafpustuleaeciaPuccinialesPuccinia caricis-montanae
leafpustuleaeciaPuccinialesPuccinia scabiosae-sempervirentis
leafpustuleaecia uredinia teliaPuccinialesPuccinia centaureae
leafpustuleteliaPuccinialesPuccinia verruca
leafvagrantsummer generationAphididaeAphis fabae
leafvagrantEriophyidaeEpitrimerus jaceae
stemborerTephritidaeTerellia plagiata
stemgallAsterolecaniidaePlanchonia arabidis
stemgallCynipidaeIsocolus scabiosae
stemgallCynipidaePhanacis centaureae
root collargallCynipidaeIsocolus fitchi
unknownunknownGelechiidaeScrobipalpa arenbergeri
unknownunknownGelechiidaeScrobipalpa pauperella
leafvagrantsummer generationAphididaeMyzus persicae
stemvagrantsummer generationAphididaeAcaudinum longisetosum
root collarvagrantspring generationAphididaeAcaudinum longisetosum
flowervagrantAphididaeUroleucon jaceae
leafvagrantAphididaePaczoskia obtecta
root collarvagrantAphididaeAcaudinum centaureae

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 10.vi.2020