hare’s-foot clover

synonym: Trifolium gracile

organ parasitic mode stage note taxonomic group parasite
root vagrant larva Curculionidae Sitona macularius
fruit borer larva Curculionidae Tychius rufipennis
unknown borer larva Apionidae Protapion schoenherri
flower borer larva Apionidae Protapion dissimile
unknown borer larva Apionidae Protapion difforme
stem borer larva Apionidae Ischnopterapion virens
flower gall Apionidae Protapion assimile
leaf gall Cecidomyiidae Dasineura trifolii
stem gall Apionidae Protapion varipes
systemic borer Anguinidae Ditylenchus dipsaci
fruit gall Curculionidae Tychius cuprifer
fruit gall Curculionidae Tychius junceus
fruit gall Curculionidae Tychius polylineatus
fruit gall Curculionidae Tychius pumilus
fruit gall Curculionidae Tychius tibialis
flower gall Cecidomyiidae Dasineura leguminicola
flower gall Eriophyidae Aceria ononidistrifolii
leaf down Erysiphales Erysiphe trifoliorum
leaf down Peronosporales Peronospora trifolii-arvensis
leaf miner Agromyzidae Liriomyza congesta
leaf pustule aecia uredinia telia Pucciniales Uromyces fallens
leaf pustule uredinia telia Pucciniales Uromyces striatus
leaf pustule telia Pucciniales Uromyces flectens
leaf pustule telia Pucciniales Uromyces trifolii
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.


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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 19.vii.2019