organ parasitic mode stage note taxonomic group parasite
leaf vagrant summer generation Aphididae Rhopalosiphum padi
root vagrant summer generation Aphididae Rhopalosiphum rufiabdominale
leaf vagrant Aphididae Rhopalosiphum maidis
root vagrant summer generation Aphididae Tetraneura ulmi
stem vagrant Aphididae Aphis craccivora
root vagrant summer generation Aphididae Forda formicaria
root vagrant Aphididae Geoica setulosa
leaf gall spring generation Aphididae Anoecia vagans
leaf vagrant Aphididae Sitobion avenae
fruit gall Ustilaginales Macalpinomyces neglectus
flower gall Ustilaginales Sporisorium magnusianum
flower gall Ustilaginales Ustilago crameri
leaf miner>borer Ochsenheimeriidae Ochsenheimeria capella
leaf down Erysiphales Erysiphaceae Blumeria graminis
leaf down Peronosporales Sclerospora graminicola
leaf gall Eriophyidae Aceria tenuis
leaf miner Agromyzidae Cerodontha incisa
leaf miner Agromyzidae Cerodontha pygmaea
leaf miner Agromyzidae Chromatomyia nigra
leaf miner Agromyzidae Agromyza albipennis
leaf miner Agromyzidae Agromyza nigrella
leaf miner doubtful Agromyzidae Agromyza nigripes
leaf miner Ephydridae Hydrellia griseola
leaf pustule uredinia telia Pucciniales Puccinia coronata
leaf pustule uredinia telia Pucciniales Puccinia graminis
leaf pustule uredinia telia Pucciniales Uromyces setariae-italicae
leaf stripe Ustilaginales Ustilago striiformis
stem vagrant Aphididae Laingia psammae
root vagrant summer generation Aphididae Tetraneura caerulescens
root vagrant summer generation Aphididae Tetraneura nigriabdominalis
leaf vagrant Aphididae Sipha elegans
leaf vagrant Aphididae Sipha maydis
root vagrant summer generation Aphididae Anoecia furcata
root vagrant summer generation Aphididae Anoecia haupti
leaf vagrant Aphididae Sipha glyceriae
root vagrant summer generation Aphididae Anoecia corni

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.

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 25.iii.2018