Plant Parasites of Europe

leafminers, galls and fungi

Holcus lanatus

yorkshire-fog

synonym: Holcus argenteus, glaucus

organparasitic modestagenotetaxonomic groupparasite
stemborerChloropidaeConioscinella frontella
leafscaleEriococcidaeAcanthococcus insignis
leafscaleEriococcidaeAcanthococcus pseudinsignis
leafvagrantEriophyidaeAceria taurica
leafvagrantEriophyidaeAculodes mckenziei
leafvagrantEriophyidaeAbacarus acutatus
leafstripeUstilaginalesUstilago salveii
leafvagrantsummer generationAphididaeMelanaphis pyraria
leafvagrantsummer generationAphididaeRhopalosiphum nymphaeae
leafgallPeronosporalesSclerophthora macrospora
leafminerolder larvaColeophoridaeColeophora lixella
stemgallCecidomyiidaeMayetiola destructor
leafvagrantsummer generationAphididaeRhopalosiphum padi
leafvagrantAphididaeSchizaphis graminum
systemicborerAnguinidaeDitylenchus dipsaci
fruitgallHypocrealesClaviceps purpurea
fruitgallTilletialesTilletia controversa
flowergallTilletialesTilletia holci
leafdownErysiphales ErysiphaceaeBlumeria graminis
leafleaf spotGeorgefischerialesJamesdicksonia dactylidis
leafgallAnguinidaeAnguina graminis
leafgallEriophyidaeAbacarus hystrix
leafgallEriophyidaeAceria tenuis
leafminerAgromyzidaeAgromyza nigripes
leafminerAgromyzidaeCerodontha denticornis
leafminerAgromyzidaeCerodontha flavocingulata
leafminerAgromyzidaeCerodontha incisa
leafminerAgromyzidaeCerodontha pygmaea
leafminerAgromyzidaeChromatomyia fuscula
leafminerAgromyzidaeChromatomyia milii
leafminerAgromyzidaeChromatomyia nigra
leafminerAgromyzidaeLiriomyza flaveola
leafminerAgromyzidaeLiriomyza phryne
leafminerElachistidaeElachista albifrontella
leafminerElachistidaeElachista argentella
leafminerElachistidaeElachista humilis
leafminerElachistidaeElachista nobilella
leafminerElachistidaeElachista pullicomella
leafminerElachistidaeElachista subocellea
leafpustuleCantharellalesCeratorhiza rhizodes
leafpustuleuredinia teliaPuccinialesPuccinia coronata
leafpustuleuredinia teliaPuccinialesPuccinia holcicola
leafpustuleuredinia teliaPuccinialesPuccinia holcina
leafstripeMicrobotryalesUstilentyloma brefeldii
leafstripeuredinia teliaPuccinialesPuccinia striiformis
leafvagrantsummer generationAphididaeSitobion fragariae
stemdownHypocrealesEpichloe clarkii
stemgallmainAphididaeDiuraphis holci
stemgallCecidomyiidaeMayetiola holci
stemgallChloropidaeOscinella nitidissima
stemvagrantAphididaeLaingia psammae
rootgallAnguinidaeSubanguina radicicola
inquilineEriophyidaeAculodes dubius
leafvagrantAphididaeAtheroides serrulatus
leafvagrantAphididaeSipha maydis
leafvagrantAphididaeSitobion avenae
leafvagrantAphididaeSchizaphis holci

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.iv.2020