Plant Parasites of Europe

leafminers, galls and fungi

Inula conyzae

ploughman’s-spikenard

synonym: Conyza squarrosa; Inula conyza, squarrosa (L.), vulgaris

organparasitic modestagenotetaxonomic groupparasite
leafvagrantChrysomelidaePilemostoma fastuosum
leafvagrantChrysomelidaeCassida murraea
rootgallCurculionidaePseudocleonus grammicus
leafhiddenTortricidaeCelypha lacunana
leafvagrantPterophoridaeOidaematophorus constanti
leafvagrantPterophoridaeOidaematophorus lithodactyla
leafhiddenCrambidaeSitochroa verticalis
leafhiddenCrambidaeAnania crocealis
rootborerTortricidaeAethes tesserana
leafvagrantTenuipalpidaeBrevipalpus recki
flowerborerIctericodes zelleri
flowerborerGelechiidaePtocheuusa paupella
fruitborerGelechiidaeApodia bifractella
stemborerspring generationPterophoridaeHellinsia carphodactyla
flowerborersummer generationPterophoridaeHellinsia carphodactyla
stemborerAgromyzidaeMelanagromyza eupatorii
leafvagrantAphididaeCapitophorus inulae
flowerborerTephritidaeTrupanea stellata
leafdownCapnodialesRamularia cupulariae
leafgallCecidomyiidaeNeomikiella beckiana
leafminerAgromyzidaeLiriomyza bryoniae
leafminerAgromyzidaePhytomyza conyzae
leafminerAnthomyiidaePhorbia incana
leafminerChoreutidaeTebenna micalis
leafminerColeophoridaeColeophora conyzae
leafminerColeophoridaeColeophora follicularis
leafminerColeophoridaeColeophora inulae
leafminerColeophoridaeColeophora leucogrammella
leafminerCrambidaeAtralata albofascialis
leafminerGlyphipterigidaeDigitivalva granitella
leafminerGlyphipterigidaeDigitivalva occidentella
leafminerGlyphipterigidaeDigitivalva perlepidella
leafminerGlyphipterigidaeDigitivalva valeriella
leafpustuleAlbuginalesPustula obtusata
leafpustuleuredinia teliaPuccinialesColeosporium inulae
stemgallCecidomyiidaeAcodiplosis inulae
leafvagrantsummer generationAphididaeBrachycaudus helichrysi
leafvagrantsummer generationAphididaeCapitophorus pakansus

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 7.vii.2020