greater knapweed

synonym: Centaurea coriacea

organ parasitic mode stage note taxonomic group parasite
leaf hidden Tortricidae Philedonides lunana
leaf hidden Tortricidae Cnephasia pasiuana
flower borer Pyralidae Myelois circumvoluta
flower gall Gelechiidae Metzneria metzneriella
flower borer Gelechiidae Metzneria aprilella
flower borer Gelechiidae Metzneria ehikeella
flower gall larva Curculionidae Larinus carlinae
flower borer larva Curculionidae Larinus sturnus
flower borer larva Curculionidae Larinus iaceae
flower borer larva Curculionidae Larinus centaurii
root collar borer Apionidae Ceratapion penetrans
unknown borer larva Apionidae Ceratapion armatum
leaf miner larva Apionidae Ceratapion austriacum
stem vagrant Aphididae Uroleucon jaceicola
leaf pustule Albuginales Pustula spinulosa
leaf down Peronosporales Bremia lactucae
stem borer Agromyzidae Melanagromyza oligophaga
stem borer Agromyzidae Melanagromyza dettmeri
fruit gall Cynipidae Isocolus jaceae
fruit gall Tephritidae Urophora quadrifasciata
flower borer Tephritidae Chaetorellia jaceae
flower borer Tephritidae Chaetorellia loricata
flower borer Tephritidae Chaetostomella cylindrica
flower borer Tephritidae Terellia ceratocera
flower borer Tephritidae Terellia colon
flower borer Tephritidae Trupanea stellata
flower gall Cecidomyiidae Dasineura miki
flower gall Cynipidae Isocolus rogenhoferi
flower gall Tephritidae Urophora cuspidata
flower gall Tephritidae Urophora lopholomae
leaf down Erysiphales Podosphaera xanthii
leaf down Erysiphales Golovinomyces montagnei
leaf down Peronosporales Bremia centaureae
leaf gall Cecidomyiidae Loewiola centaureae
leaf gall Eriophyidae Aceria centaureae
leaf miner Agromyzidae Liriomyza bessarabica
leaf miner Agromyzidae Liriomyza centaureae
leaf miner Agromyzidae Liriomyza strigata
leaf miner Agromyzidae Phytomyza autumnalis
leaf miner Agromyzidae Phytomyza cinerea
leaf miner Coleophoridae Coleophora brevipalpella
leaf miner Coleophoridae Coleophora conspicuella
leaf miner Coleophoridae Coleophora didymella
leaf miner doubtful Curculionidae Pseudorchestes cinereus
leaf miner Curculionidae Pseudorchestes ermischi
leaf miner Curculionidae Pseudorchestes pratensis
leaf miner Depressariidae Agonopterix arenella
leaf miner Depressariidae Agonopterix subpropinquella
leaf miner Gelechiidae Scrobipalpa halonella
leaf miner Gelechiidae Scrobipalpa perinii
leaf miner Gelechiidae Scrobipalpula psilella
leaf miner Zygaenidae Jordanita globulariae
leaf miner Zygaenidae Jordanita graeca
leaf miner Zygaenidae Jordanita notata
leaf pustule aecia Pucciniales Puccinia caricis-montanae
leaf pustule aecia Pucciniales Puccinia scabiosae-sempervirentis
leaf pustule aecia uredinia telia Pucciniales Puccinia centaureae
leaf pustule telia Pucciniales Puccinia verruca
leaf vagrant summer generation Aphididae Aphis fabae
leaf vagrant Eriophyidae Epitrimerus jaceae
stem borer Tephritidae Terellia plagiata
stem gall Asterolecaniidae Planchonia arabidis
stem gall Cynipidae Isocolus scabiosae
stem gall Cynipidae Phanacis centaureae
root collar gall Cynipidae Isocolus fitchi
unknown unknown Gelechiidae Scrobipalpa arenbergeri
unknown unknown Gelechiidae Scrobipalpa pauperella
leaf vagrant summer generation Aphididae Myzus persicae
stem vagrant summer generation Aphididae Acaudinum longisetosum
root collar vagrant spring generation Aphididae Acaudinum longisetosum
flower vagrant Aphididae Uroleucon jaceae
leaf vagrant Aphididae Paczoskia obtecta
root collar vagrant Aphididae Acaudinum 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.

 

mod 10.xi.2019