organ parasitic mode stage note taxonomic group parasite
flower borer Tortricidae Phalonidia gilvicomana
leaf miner Curculionidae Orthochaetes setiger
leaf scale Aleyrodidae Aleyrodes proletella
leaf scale Aleyrodidae Aleyrodes lonicerae
leaf scale Aleyrodidae Trialeurodes vaporariorum
root collar gall Aphididae Aphis intybi
leaf down Peronosporales Bremia lapsanae
stem miner Agromyzidae Ophiomyia heringi
stem miner Agromyzidae Phytoliriomyza arctica
unknown vagrant Aphididae Acyrthosiphon ilka
leaf borer Agromyzidae Ophiomyia beckeri
leaf borer Agromyzidae Ophiomyia cunctata
leaf down Erysiphales Golovinomyces cichoracearum
leaf down Erysiphales Podosphaera erigerontis-canadensis
leaf leaf spot Capnodiales Ramularia lampsanae
leaf leaf spot Capnodiales Didymaria matricariae
leaf miner Agromyzidae Liriomyza eupatorii
leaf miner Agromyzidae Liriomyza puella
leaf miner Agromyzidae Liriomyza sonchi
leaf miner Agromyzidae Liriomyza strigata
leaf miner Agromyzidae Ophiomyia pulicaria
leaf miner Agromyzidae Phytomyza marginella
leaf miner Agromyzidae Phytomyza penicilla
leaf miner Curculionidae Orthochaetes insignis
leaf miner Tephritidae Trypeta immaculata
leaf miner Tortricidae Cnephasia asseclana
leaf miner Tortricidae Cnephasia incertana
leaf pustule Albuginales Pustula obtusata
leaf pustule aecia Pucciniales Puccinia opizii
leaf pustule aecia uredinia telia Pucciniales Puccinia lapsanae
leaf pustule uredinia telia Pucciniales Coleosporium sonchi
leaf vagrant summer generation Aphididae Nasonovia ribisnigri
leaf vagrant Aphididae Hyperomyzus lampsanae
stem gall Cynipidae Timaspis lampsanae
root gall Meloidogynidae Meloidogyne hapla
root vagrant Aphididae Trama troglodytes
root vagrant summer generation Aphididae Pemphigus bursarius
stem vagrant Aphididae Uroleucon cichorii
leaf vagrant summer generation Aphididae Aphis nasturtii
leaf vagrant Aphididae Myzus ornatus
stem vagrant Aphididae Uroleucon sonchi

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 12.vii.2019