Plant Parasites of Europe

leafminers, galls and fungi

Alopecurus myosuroides

black-grass

synonym: Alopecurus agrestis

organ parasitic mode stage note taxonomic group parasite
seeds vagrant Carabidae Pterostichus melanarius
seeds vagrant Carabidae Poecilus cupreus
seeds vagrant Carabidae Harpalus affinis
seeds vagrant Carabidae Harpalus rufipes
leaf vagrant Thripidae Thrips major
unknown unknown Diaspididae Mohelnaspis massiliensis
leaf leaf spot Ploettnerulaceae Mastigosporium album
root collar vagrant Pentatomidae Sciocoris capitatus
root collar vagrant Pentatomidae Sciocoris helferi
root collar vagrant Pentatomidae Sciocoris hoberlandti
root collar vagrant Pentatomidae Sciocoris luteolus
root collar vagrant Pentatomidae Sciocoris sulcatus
leaf vagrant Scutelleridae Eurygaster integriceps
flower vagrant Pentatomidae Aelia acuminata
fruit gall Tilletiales Tilletia controversa
leaf down Erysiphales Erysiphaceae Blumeria graminis
leaf gall Peronosporales Sclerophthora macrospora
leaf miner Agromyzidae Chromatomyia nigra
leaf miner Agromyzidae Liriomyza flaveola
leaf pustule uredinia telia Pucciniales Puccinia graminis
leaf pustule uredinia telia Pucciniales Puccinia perplexans
leaf pustule uredinia telia Pucciniales Uromyces alopecuri
leaf stripe Urocystidales Urocystis alopecuri
stem gall Cecidomyiidae Haplodiplosis marginata
stem gall Chloropidae Oscinella frit

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 2.xi.2023