organ parasitic mode stage note taxonomic group parasite
stem scale Coccidae Pulvinaria regalis
root vagrant larva Curculionidae Sitona lineatus
leaf scale Aleyrodidae Trialeurodes vaporariorum
leaf vagrant Aphididae Acyrthosiphon caraganae
systemic scale Diaspididae Parlatoria oleae
stem borer Psilidae Chyliza leptogaster
stem gall Rhizobiales Agrobacterium tumefaciens
leaf vagrant Aphididae Aphis gossypii
flower gall Aphididae Aphis cytisorum
leaf down Erysiphales Erysiphe palczewskii
leaf down Erysiphales Erysiphe pseudacaciae
leaf down Erysiphales Erysiphe robiniae
leaf down Erysiphales Leveillula papilionacearum
leaf down Peronosporales Peronospora cytisi
leaf leaf spot Capnodiales Cladosporium robiniae
leaf gall Cecidomyiidae Obolodiplosis robiniae
leaf gall Eriophyidae Aculops allotrichus
leaf miner Agromyzidae Liriomyza congesta
leaf miner Gracillariidae Macrosaccus robiniella
leaf miner Gracillariidae Parectopa robiniella
leaf miner Incurvariidae Incurvaria pectinea
leaf vagrant summer generation Aphididae Aphis fabae
stem gall Santalaceae Viscum album
root gall Rhizobiales Rhizobium leguminosarum
stem vagrant Aphididae Aphis craccivora
stem scale Coccidae Parthenolecanium corni
stem vagrant Aphididae Acyrthosiphon pisum
leaf vagrant Aphididae Appendiseta robiniae


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.


mod 12.x.2019