organ parasitic mode stage note taxonomic group parasite
leaf vagrant Tenthredinidae Athalia cordata
root collar scale Eriococcidae Rhizococcus munroi
unknown scale Eriococcidae Rhizococcus henryi
stem scale Eriococcidae Acanthococcus thymi
stem vagrant Pseudococcidae Puto superbus
leaf hidden Tortricidae Orthotaenia undulana
leaf hidden Tortricidae Thiodia trochilana
leaf hidden Crambidae Anania lancealis
unknown unknown Gracillariidae Aspilapteryx inquinata
leaf hidden Crambidae Sitochroa verticalis
leaf hidden Tortricidae Thiodia couleruana
leaf hidden Tortricidae Thiodia couleruana
leaf hidden Tortricidae Clepsis pallidana
stem gall doubtful Curculionidae Thamnurgus delphinii
leaf hidden Tortricidae Cnephasia alticolana
leaf hidden Tortricidae Clepsis rurinana
leaf bud hidden doubtful Tortricidae Cnephasia conspersana
leaf miner younger larva Tortricidae Cnephasia asseclana
leaf miner younger larva Tortricidae Cnephasia stephensiana
leaf hidden older larva Tortricidae Cnephasia stephensiana
leaf hidden older larva Tortricidae Cnephasia asseclana
leaf hidden Tortricidae Cnephasia incertana
flower hidden Tortricidae Cnephasia genitalana
flower vagrant Pterophoridae Capperia loranus
unknown unknown Pterophoridae Capperia polonica
unknown unknown Pterophoridae Capperia maratonica
leaf vagrant Pterophoridae Capperia britanniodactylus
flower vagrant Pterophoridae Capperia celeusi
flower borer Pterophoridae Amblyptilia acanthadactyla
stem gall Cosmopterigidae Eteobalea teucrii
leaf leaf spot Taphrinales Taphrina candicans
leaf bud inquiline Eriophyidae Aculops thymi
root scale Coccidae Rhizopulvinaria artemisiae
leaf scale Aleyrodidae Aleurolobus teucrii
leaf scale Aleyrodidae Aleurotuba jelinekii
stem vagrant Ortheziidae Orthezia urticae
leaf scale Diaspididae Aspidiotus nerii
leaf miner Chrysomelidae Dibolia depressiuscula
leaf vagrant doubtful Aphididae Aphis salviae
flower gall Eriophyidae Anthocoptes octocinctus
flower gall Tingidae Copium clavicorne
flower gall Tingidae Copium teucrii
leaf bud gall Cecidomyiidae Dasineura teucrii
leaf down Erysiphales Leveillula duriaei
leaf down Peronosporales Peronospora teucrii
leaf gall Aphididae Aphis teucrii
leaf gall Eriophyidae Aculus teucrii
leaf miner Agromyzidae Liriomyza strigata
leaf miner Agromyzidae Amauromyza labiatarum
leaf miner Chrysomelidae Apteropeda globosa
leaf miner Chrysomelidae Apteropeda orbiculata
leaf miner Coleophoridae Coleophora auricella
leaf miner Coleophoridae Coleophora ballotella
leaf miner Coleophoridae Coleophora chamaedriella
leaf miner Coleophoridae Coleophora mareki
leaf miner Gracillariidae Aspilapteryx limosella
leaf miner Nepticulidae Glaucolepis teucriella
leaf miner Psychidae Apterona helicinella
leaf miner Psychidae Apterona helicoidella
leaf miner Tortricidae Cnephasia ecullyana
leaf pustule Blastocladiales Physoderma vagans
leaf pustule aecia Pucciniales Aecidium teucrii-scorodoniae
leaf pustule telia Pucciniales Puccinia annularis
leaf pustule telia Pucciniales Puccinia chamaedryos
leaf pustule telia Pucciniales Puccinia constricta
leaf pustule telia Pucciniales Puccinia istriaca
leaf pustule telia Pucciniales Puccinia majoricensis
leaf pustule telia Pucciniales Puccinia polii
leaf pustule telia Pucciniales Puccinia teucrii
stem gall Asterolecaniidae Planchonia arabidis
stem gall Curculionidae Thamnurgus kaltenbachii
root collar vagrant Aphididae Aphis alienus
root gall Ustilaginales Melanotaenium jaapii
leaf vagrant Aphididae Ovatomyzus chamaedrys
leaf vagrant summer generation Aphididae Aphis frangulae


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 23.iii.2020