Plant Parasites of Europe

leafminers, galls and fungi

genus Althaea

organ parasitic mode stage note taxonomic group parasite
root collar scale Pseudococcidae Dysmicoccus angustifrons
flower hidden Phlaeothripidae Haplothrips distinguendus
stem borer larva Curculionidae Lixus pulverulentus
flower hidden Thripidae Odontothrips meridionalis
leaf vagrant Thripidae Thrips major
flower predator Phlaeothripidae Haplothrips reuteri
flower hidden Thripidae Frankliniella occidentalis
flower hidden Thripidae Frankliniella pallida
flower predator Aeolothripidae Aeolothrips collaris
flower hidden Thripidae Tenothrips frici
flower hidden Thripidae Thrips italicus
flower hidden Thripidae Thrips meridionalis
leaf hidden Thripidae Thrips tabaci
flower predator Aeolothripidae Aeolothrips intermedius
flower hidden Thripidae Thrips atratus
root film Helicobasidiaceae Helicobasidium purpureum
systemic pustule Sclerotiniaceae Sclerotinia sclerotiorum
leaf leaf spot Mycosphaerellaceae Cercospora althaeina
leaf leaf spot Pleosporales incertae sedis Phoma exigua var. exigua
leaf leaf spot Mycosphaerellaceae Cercospora malvarum
leaf leaf spot Mycosphaerellaceae Septoria heterochroa
leaf leaf spot Mycosphaerellaceae Ramularia keithii
leaf vagrant Tingidae Urentius euonymus
fruit vagrant Pyrrhocoridae Pyrrhocoris apterus
leaf vagrant Pentatomidae Nezara viridula
stem vagrant Pentatomidae Palomena prasina
root vagrant Cydnidae Canthophorus melanopterus
leaf vagrant Pentatomidae Carpocoris mediterraneus
predator Miridae Campylomma verbasci
leaf vagrant Lygaeidae Oxycarenus lavaterae
leaf vagrant Rhopalidae Liorhyssus hyalinus
root borer Cerambycidae Plagionotus bobelayei
root borer Noctuidae Hydraecia osseola
leaf vagrant Geometridae Larentia clavaria
leaf hidden Hesperiidae Carcharodus alceae
leaf miner Buprestidae Trachys ahenatus
leaf vagrant Cicadellidae Eupteryx atropunctata
leaf vagrant Cicadellidae Eupteryx melissae
leaf vagrant Cicadellidae Euscelidius variegatus
fruit gall Apionidae Rhopalapion longirostre
stem borer Chrysomelidae Podagrica menetriesi
root vagrant Chrysomelidae Podagrica malvae
unknown unknown Curculionidae Malvaevora timida
leaf vagrant Eriophyidae Aculus althaeus
leaf vagrant Eriophyidae Abacarus longilobus
fruit borer Gelechiidae Pexicopia malvella
flower borer Gelechiidae Platyedra subcinerea
root borer larva Chrysomelidae Podagrica fuscipes
stem borer larva Chrysomelidae Podagrica fuscicornis
unknown borer larva Apionidae Aspidapion soror
fruit borer larva Apionidae Pseudapion fulvirostre
root collar borer larva Apionidae Aspidapion aeneum
stem borer larva Apionidae Aspidapion radiolus
fruit borer larva Apionidae Aspidapion validum
leaf vagrant doubtful Aphididae Acyrthosiphon malvae poterii
leaf vagrant summer generation Aphididae Aphis fabae
leaf vagrant Aphididae Aphis gossypii
leaf vagrant summer generation Aphididae Aphis frangulae
leaf vagrant Aphididae Aulacorthum solani
fruit gall Apionidae Malvapion malvae
leaf down Erysiphales Golovinomyces orontii
leaf down Erysiphales Leveillula taurica
leaf gall Aphididae Aphis umbrella
leaf miner Agromyzidae Liriomyza xanthocera
leaf miner Buprestidae Trachys troglodytiformis
leaf miner Psychidae Apterona helicoidella
leaf pustule telia Pucciniales Puccinia malvacearum
leaf vagrant summer generation Aphididae Myzus persicae
leaf vagrant Aphididae Aphis althaeae

Organ

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.

PARASITIC MODE

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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IMPORTANT

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 2.ii.2024