Plant Parasites of Europe

leafminers, galls and fungi

genus Gnaphalium

organparasitic modestagenotetaxonomic groupparasite
leafvagrantChrysomelidaeCassida seladonia
leafminerChoreutidaeTebenna micalis
leafhiddenTortricidaeClepsis pallidana
leafhiddenTortricidaeCnephasia incertana
flowerhiddenTortricidaeEupoecilia cebrana
stemborerTortricidaeCochylidia implicitana
root collarborerTortricidaeAethes williana
flowerborerPterophoridaeHellinsia distinctus
stemboreryounger larvaPterophoridaePlatyptilia tesseradactyla
leafvagrantolder larvaPterophoridaePlatyptilia tesseradactyla
leafvagrantsummer generationAphididaeAphis fabae fabae
stemvagrantAphididaeAphis craccivora
leafvagrantsummer generationAphididaeAphis fabae
systemicborerAnguinidaeDitylenchus dipsaci
flowergallsummer generationTephritidaeActinoptera discoidea
leaf budgallspring generationTephritidaeActinoptera discoidea
leafdownErysiphalesNeoerysiphe gnaphalii
leafleaf spotEntylomatalesEntyloma magnusii
leafminerAgromyzidaeLiriomyza strigata
leafminerAgromyzidaeLiriomyza trifolii
leafminerAgromyzidaeOphiomyia gnaphalii
leafminerAgromyzidaePhytomyza hedingi
leafminerAgromyzidaePhytomyza kyffhusana
leafminerBucculatricidaeBucculatrix gnaphaliella
leafminerChoreutidaeTebenna micalis
leafminerColeophoridaeColeophora caelebipennella
leafminerColeophoridaeColeophora gnaphalii
leafminerCurculionidaeOrthochaetes insignis
leafminerdoubtfulGelechiidaeScrobipalpula diffluella
leafminerGelechiidaeScrobipalpula psilella
leafminerGlyphipterigidaeDigitivalva reticulella
leafpustuleAlbuginalesPustula obtusata
leafvagrantsummer generationAphididaeBrachycaudus helichrysi
stemgallApionidaeAcentrotypus brunnipes
stemgallTortricidaeEucosma albidulana
rootgallMeloidogynidaeMeloidogyne hapla
rootvagrantsummer generationAphididaePemphigus populinigrae
leafvagrantsummer generationAphididaeBrachycaudus helichrysi
leafvagrantAphididaePleotrichophorus filaginis
leafvagrantAphididaeMyzus ornatus

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 13.vii.2020