Plant Parasites of Europe

leafminers, galls and fungi

genus Althaea

organparasitic modestagenotetaxonomic groupparasite
rootfilmHelicobasidiaceaeHelicobasidium purpureum
systemicpustuleSclerotiniaceaeSclerotinia sclerotiorum
leafleaf spotMycosphaerellaceaeCercospora althaeina
leafleaf spotPleosporales incertae sedisPhoma exigua var. exigua
leafleaf spotMycosphaerellaceaeCercospora malvarum
leafleaf spotMycosphaerellaceaeSeptoria heterochroa
leafleaf spotMycosphaerellaceaeRamularia keithii
leafvagrantTingidaeUrentius euonymus
fruitvagrantPyrrhocoridaePyrrhocoris apterus
leafvagrantPentatomidaeNezara viridula
stemvagrantPentatomidaePalomena prasina
rootvagrantCydnidaeCanthophorus melanopterus
leafvagrantPentatomidaeCarpocoris mediterraneus
predatorMiridaeCampylomma verbasci
leafvagrantLygaeidaeOxycarenus lavaterae
leafvagrantRhopalidaeLiorhyssus hyalinus
rootborerCerambycidaePlagionotus bobelayei
rootborerNoctuidaeHydraecia osseola
leafvagrantGeometridaeLarentia clavaria
leafhiddenHesperiidaeCarcharodus alceae
leafminerBuprestidaeTrachys ahenatus
leafvagrantCicadellidaeEupteryx atropunctata
leafvagrantCicadellidaeEupteryx melissae
leafvagrantCicadellidaeEuscelidius variegatus
fruitgallApionidaeRhopalapion longirostre
stemborerChrysomelidaePodagrica menetriesi
rootvagrantChrysomelidaePodagrica malvae
unknownunknownCurculionidaeMalvaevora timida
leafvagrantEriophyidaeAculus althaeus
leafvagrantEriophyidaeAbacarus longilobus
fruitborerGelechiidaePexicopia malvella
flowerborerGelechiidaePlatyedra subcinerea
rootborerlarvaChrysomelidaePodagrica fuscipes
stemborerlarvaChrysomelidaePodagrica fuscicornis
unknownborerlarvaApionidaeAspidapion soror
fruitborerlarvaApionidaePseudapion fulvirostre
root collarborerlarvaApionidaeAspidapion aeneum
stemborerlarvaApionidaeAspidapion radiolus
fruitborerlarvaApionidaeAspidapion validum
leafvagrantdoubtfulAphididaeAcyrthosiphon malvae poterii
leafvagrantsummer generationAphididaeAphis fabae
leafvagrantAphididaeAphis gossypii
leafvagrantsummer generationAphididaeAphis frangulae
leafvagrantAphididaeAulacorthum solani
fruitgallApionidaeMalvapion malvae
leafdownErysiphalesGolovinomyces orontii
leafdownErysiphalesLeveillula taurica
leafgallAphididaeAphis umbrella
leafminerAgromyzidaeLiriomyza xanthocera
leafminerBuprestidaeTrachys troglodytiformis
leafminerPsychidaeApterona helicoidella
leafpustuleteliaPuccinialesPuccinia malvacearum
leafvagrantsummer generationAphididaeMyzus persicae
leafvagrantAphididaeAphis althaeae


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.


Last modified 4.xi.2022