Plant Parasites of Europe

leafminers, galls and fungi

Agrostis gigantea

black bent

synonym: Agrostis graniticola, nigra, praticola, repens

organ parasitic mode stage note taxonomic group parasite
leaf vagrant Nymphalidae Pyronia tithonus
leaf vagrant Nymphalidae Pararge aegeria
leaf vagrant Nymphalidae Pararge xiphia
stem borer Anthomyzidae Stiphrosoma sabulosum
unknown unknown Sphaeroceridae Apteromyia claviventris
unknown unknown Sphaeroceridae Minilimosina fungicola
stem borer Anthomyzidae Stiphrosoma laetum
leaf vagrant Delphacidae Criomorphus williamsi
stem gall Chloropidae Oscinella nitidissima
stem vagrant Tenthredinidae Euura clitellata
stem scale Eriococcidae Greenisca glyceriae
leaf gall Eriophyidae Abacarus hystrix
leaf vagrant Eriophyidae Aculodes mckenziei
leaf stripe Ustilaginales Ustilago agrostidis-palustris
leaf down Erysiphales Erysiphaceae Blumeria graminis
leaf gall Anguinidae Anguina graminis
leaf miner Agromyzidae Cerodontha flavocingulata
leaf pustule uredinia telia Pucciniales Puccinia agrostidis
leaf pustule uredinia telia Pucciniales Puccinia coronata
leaf pustule uredinia telia Pucciniales Puccinia graminis
leaf pustule uredinia telia Pucciniales Uromyces agrostidis
leaf pustule Urocystidales Urocystis agrostidis
stem down Hypocreales Epichloe baconii
leaf vagrant Aphididae Sipha glyceriae
leaf vagrant Aphididae Sipha maydis


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 11.v.2021