organ parasitic mode stage note taxonomic group parasite
leaf bud gall Apionidae Holotrichapion pisi
stem borer larva Apionidae Stenopterapion tenue
leaf miner Agromyzidae Chromatomyia horticola
root borer Curculionidae Hylastinus obscurus
root collar vagrant Aphididae Aphis medicaginis
leaf vagrant summer generation Aphididae Aphis nasturtii
systemic borer Anguinidae Ditylenchus dipsaci
systemic gall Eriophyidae Aceria ononidis
fruit gall Cecidomyiidae Asphondylia miki
fruit gall Curculionidae Tychius aureolus
fruit gall Curculionidae Tychius medicaginis
fruit gall doubtful Curculionidae Tychius meliloti
flower gall Cecidomyiidae Contarinia medicaginis
flower gall Eriophyidae Aceria plicator
leaf bud gall Apionidae Holotrichapion pullum
leaf bud gall Cecidomyiidae Dasineura medicaginis
leaf down Erysiphales Erysiphe pisi var. pisi
leaf down Erysiphales Leveillula papilionacearum
leaf down Peronosporales Peronospora aestivalis
leaf leaf spot Helotiales Pseudopeziza medicaginis
leaf gall Cecidomyiidae Jaapiella medicaginis
leaf gall Cecidomyiidae Jaapiella jaapiana
leaf miner Agromyzidae Agromyza drepanura
leaf miner Agromyzidae Agromyza frontella
leaf miner Agromyzidae Agromyza nana
leaf miner Agromyzidae Agromyza rozkosnyi
leaf miner Agromyzidae Liriomyza cicerina
leaf miner Agromyzidae Liriomyza congesta
leaf miner Agromyzidae Liriomyza xanthocera
leaf miner Gelechiidae Aproaerema anthyllidella
leaf miner Gelechiidae Syncopacma vinella
leaf miner Gracillariidae Phyllonorycter medicaginella
leaf miner Psychidae Apterona gracilis
leaf pustule uredinia telia Pucciniales Uromyces striatus
leaf vagrant summer generation Aphididae Aphis fabae
leaf vagrant Eriophyidae Aculus alfalfae
stem borer Agromyzidae Ophiomyia curvipalpis
root collar gall Blastocladiales Physoderma alfalfae
root gall Meloidogynidae Meloidogyne hapla
root gall Meloidogynidae Meloidogyne naasi
stem vagrant Aphididae Acyrthosiphon kondoi
flower vagrant Aphididae Acyrthosiphon loti
leaf vagrant Aphididae Therioaphis trifolii maculata
stem vagrant Aphididae Aphis craccivora
stem vagrant Aphididae Acyrthosiphon pisum
leaf vagrant summer generation Aphididae Aphis fabae fabae
leaf vagrant Aphididae Therioaphis trifolii


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.


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 20.iv.2019