creeping thistle, Canada thistle

synonym: Cirsium incanum, ruthenicum

organ parasitic mode stage note taxonomic group parasite
fruit borer Pyralidae Homoeosoma nebulella
stem borer doubtful Syrphidae Cheilosia cynocephala
unknown borer Syrphidae Cheilosia flavipes
root borer Syrphidae Cheilosia vulpina
stem borer larva Apionidae Ceratapion scalptum
stem borer larva Curculionidae Hadroplontus litura
flower gall Curculionidae Rhinocyllus conicus
stem borer larva Curculionidae Lixus filiformis
stem borer larva Curculionidae Lixus scolopax
stem borer larva Curculionidae Lixus pulverulentus
flower gall larva Curculionidae Larinus carlinae
flower borer larva Curculionidae Larinus turbinatus
flower borer larva Curculionidae Larinus iaceae
flower borer larva Curculionidae Larinus sturnus
stem borer larva Apionidae Ceratapion carduorum
root collar borer larva Apionidae Ceratapion gibbirostre
root vagrant Aphididae Protrama flavescens
root vagrant doubtful Aphididae Protaphis anthemidis
leaf vagrant Aphididae Aphis spiraecola
leaf miner Agromyzidae Chromatomyia horticola
leaf scale Coccidae Coccus hesperidum
leaf down Peronosporales Bremia lactucae
leaf gall Cecidomyiidae Clinodiplosis cirsii
stem borer Agromyzidae Melanagromyza aeneoventris
leaf vagrant doubtful Aphididae Aphis acanthoidis
leaf vagrant Aphididae Aphis gossypii
leaf vagrant summer generation Aphididae Aphis fabae fabae
systemic borer Anguinidae Ditylenchus dipsaci
fruit gall rarely Tephritidae Terellia tussilaginis
flower borer Cecidomyiidae Macrolabis cirsii
flower borer Tephritidae Chaetostomella cylindrica
flower borer Tephritidae Ensina sonchi
flower borer Tephritidae Tephritis acanthiophilopsis
flower borer Tephritidae Tephritis cometa
flower borer Tephritidae Terellia ruficauda
flower borer Tephritidae Terellia serratulae
flower gall Cecidomyiidae Jaapiella cirsiicola
flower gall Cynipidae Isocolus cirsii
flower gall Tephritidae Urophora stylata
leaf borer Tephritidae Xyphosia miliaria
leaf down Erysiphales Erysiphe mayorii var. mayorii
leaf down Erysiphales Golovinomyces montagnei
leaf down Erysiphales Leveillula lappae
leaf down Erysiphales Podosphaera xanthii
leaf down Peronosporales Bremia cirsii
leaf gall Aphididae Uroleucon cirsii
leaf gall Aphididae Capitophorus horni
leaf gall Cecidomyiidae Clinodiplosis oleracei
leaf gall Eriophyidae Aceria anthocoptes
leaf gall doubtful Psyllidae Craspedolepta nervosa
leaf gall Triozidae Trioza agrophila
leaf miner Agromyzidae Chromatomyia syngenesiae
leaf miner Agromyzidae Liriomyza bryoniae
leaf miner Agromyzidae Liriomyza soror
leaf miner Agromyzidae Liriomyza strigata
leaf miner Agromyzidae Liriomyza trifolii
leaf miner Agromyzidae Phytomyza autumnalis
leaf miner Agromyzidae Phytomyza cirsii
leaf miner main Agromyzidae Phytomyza spinaciae
leaf miner Anthomyiidae Pegomya steini
leaf miner Chrysomelidae Apteropeda orbiculata
leaf miner Chrysomelidae Sphaeroderma testaceum
leaf miner Coleophoridae Coleophora follicularis
leaf miner Coleophoridae Coleophora paripennella
leaf miner Coleophoridae Coleophora peribenanderi
leaf miner Depressariidae Agonopterix arenella
leaf miner Depressariidae Agonopterix carduella
leaf miner Depressariidae Agonopterix propinquella
leaf miner Depressariidae Agonopterix subpropinquella
leaf miner Gelechiidae Scrobipalpa acuminatella
leaf miner Sciaridae Phytosciara halterata
leaf miner Sciaridae Phytosciara macrotricha
leaf pustule Albuginales Pustula spinulosa
leaf pustule aecia Pucciniales Puccinia dioicae
leaf pustule aecia uredinia telia Pucciniales Puccinia punctiformis
leaf pustule uredinia telia doubtful Pucciniales Puccinia laschii
leaf vagrant summer generation Aphididae Aphis fabae
leaf vagrant summer generation Aphididae Aphis fabae cirsiiacanthoidis
leaf vagrant Eriophyidae Epitrimerus cardui
leaf vagrant Triozidae Trioza cirsii
leaf vagrant Triozidae Bactericera nigricornis
stem borer Agromyzidae Napomyza lateralis
stem gall Tephritidae Urophora cardui
root collar gall Curculionidae Cleonis pigra
root vagrant Aphididae Trama troglodytes
leaf vagrant summer generation main Aphididae Aphis fabae cirsiiacanthoidis
leaf vagrant summer generation Aphididae Brachycaudus cardui
leaf vagrant summer generation Aphididae Aphis fabae solanella
leaf vagrant summer generation Aphididae Myzus persicae
root collar vagrant rarely Aphididae Aphis janischi
root collar vagrant Aphididae Dysaphis lappae cirsii
leaf vagrant Aphididae Capitophorus carduinus
leaf vagrant summer generation Aphididae Capitophorus elaeagni
leaf vagrant Aphididae Aulacorthum solani
leaf vagrant Aphididae Capitophorus gynoxanthus
stem vagrant Aphididae Uroleucon aeneum


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.


mod 21.ix.2019