Plant Parasites of Europe

leafminers, galls and fungi

Lolium multiflorum

italian rye-grass

synonym: Lolium aristatum, boucheanum, italicum, multiflorum subsp. italicum, siculum

organparasitic modestagenotetaxonomic groupparasite
stemborerNoctuidaeOria musculosa
leafvagrantNoctuidaeMythimna prominens
leafvagrantCicadellidaeZyginidia pullula
flowerhiddenThripidaeChirothrips manicatus
flowerhiddenThripidaeLimothrips cerealium
leafvagrantEriophyidaeAculodes mckenziei
leafvagrantEriophyidaeAbacarus compactus
systemicborerAnguinidaeDitylenchus dipsaci
fruitgallTilletialesTilletia vankyi
flowergallTilletialesTilletia lolii
flowergallUstilaginalesUstilago bullata
leafdownErysiphales ErysiphaceaeBlumeria graminis
leafgallAphididaeDiuraphis frequens
leafgallEriophyidaeAbacarus hystrix
leafminerAgromyzidaeCerodontha incisa
leafminerAgromyzidaeCerodontha muscina
leafpustuleuredinia teliaPuccinialesPuccinia coronata
leafpustuleuredinia teliaPuccinialesPuccinia graminis
leafpustuleuredinia teliaPuccinialesPuccinia loliicola
leafpustuleuredinia teliaPuccinialesPuccinia loliina
leafstripeuredinia teliaPuccinialesPuccinia striiformis
leafstripeUrocystidalesUrocystis bolivarii
stemborermainChloropidaeOscinella vastator
stemgallChloropidaeOscinella frit
stemgallChloropidaeOscinella nitidissima
leafvagrantAphididaeSipha maydis
leafvagrantAphididaeSitobion avenae
leafvagrantsummer generationAphididaeRhopalosiphum padi
leafvagrantsummer generationAphididaeSitobion fragariae


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.


Last modified 7.xi.2021