wall barley

organ parasitic mode stage note taxonomic group parasite
leaf vagrant Eriophyidae Aceria tosichella
leaf vagrant Aphididae Schizaphis graminum
leaf vagrant Aphididae Rhopalosiphum maidis
leaf vagrant summer generation Aphididae Melanaphis pyraria
leaf vagrant Aphididae Israelaphis carmini
leaf vagrant summer generation Aphididae Metopolophium dirhodum
fruit gall Hypocreales Claviceps purpurea
fruit gall Tilletiales Tilletia controversa
flower gall Ustilaginales Ustilago avenae
flower gall Ustilaginales Ustilago bullata
leaf down Erysiphales Erysiphaceae Blumeria graminis
leaf gall Eriophyidae Abacarus hystrix
leaf gall Eriophyidae Aceria tenuis
leaf miner Agromyzidae Agromyza albipennis
leaf miner Agromyzidae Agromyza ambigua
leaf miner Agromyzidae Agromyza mobilis
leaf miner Agromyzidae Agromyza nigrociliata
leaf miner Agromyzidae Cerodontha muscina
leaf miner Agromyzidae Liriomyza graminivora
leaf miner Agromyzidae Liriomyza orbona
leaf miner Coleophoridae Coleophora perplexella
leaf pustule uredinia telia Pucciniales Puccinia clematidis-secalis
leaf pustule uredinia telia Pucciniales Puccinia coronata
leaf pustule uredinia telia Pucciniales Puccinia graminis
leaf pustule uredinia telia Pucciniales Puccinia hordei
leaf pustule uredinia telia Pucciniales Puccinia hordei-murini
leaf vagrant summer generation Aphididae Aphis fabae
stem borer main Chloropidae Oscinella pusilla
stem gall Cecidomyiidae Mayetiola destructor
stem gall Chloropidae Chlorops pumilionis
stem gall Chloropidae Oscinella frit
root collar gall Cecidomyiidae Mayetiola hordei
leaf vagrant Aphididae Atheroides serrulatus
leaf vagrant Aphididae Sipha elegans
leaf vagrant Aphididae Sipha maydis
leaf vagrant summer generation Aphididae Sitobion fragariae
leaf vagrant summer generation Aphididae Rhopalosiphum padi
leaf stripe Aphididae Diuraphis noxia
root vagrant summer generation Aphididae Anoecia haupti
root vagrant summer generation Aphididae Anoecia corni
leaf vagrant Aphididae Sitobion avenae

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.

 

mod 8.x.2019