Plant Parasites of Europe

leafminers, galls and fungi

genus Myrtus

organ parasitic mode stage note taxonomic group parasite
leaf leaf spot Cladosporiaceae Cladosporium myrticola
leaf leaf spot Mycosphaerellaceae Pseudocercospora myrticola
leaf leaf spot Bartaliniaceae Zetiasplozna unicolor
leaf leaf spot Didymellaceae Ascochyta myrticola
leaf leaf spot Botryosphaeriaceae Dothiorella nuptialis
leaf leaf spot Phyllostictaceae Phyllosticta pfaffii
leaf leaf spot Phyllostictaceae Phyllosticta nuptialis
leaf vagrant Miridae Megacoelum myrti
leaf vagrant Scutelleridae Solenosthedium bilunatum
leaf vagrant Miridae Phytocoris pilifer
leaf vagrant Pentatomidae Mustha longispinis
leaf predator Pentatomidae Acrosternum heegeri
leaf vagrant Cicadellidae Placotettix taeniatifrons
leaf vagrant Thripidae Retithrips syriacus
scale Diaspididae Hemiberlesia lataniae
scale Diaspididae Hemiberlesia rapax
stem scale Pseudococcidae Planococcus citri
stem scale Coccidae Ceroplastes rusci
stem scale Coccidae Ceroplastes sinensis
leaf vagrant Erebidae Ophiusa tirhaca
leaf vagrant Geometridae Cyclophora puppillaria
leaf vagrant Issidae Latilica maculipes
leaf vagrant Cicadellidae Selenocephalus obsoletus
leaf vagrant Cicadellidae Selenocephalus stenopterus
stem gall Pseudomonadales Pseudomonas savastanoi pv savanastoi
flower hidden Thripidae Frankliniella occidentalis
flower hidden Thripidae Thrips hawaiiensis
leaf scale Aleyrodidae Trialeurodes lauri
flower hidden Aeolothripidae Melanthrips pallidior
leaf vagrant Thripidae Scirtothrips inermis
leaf vagrant Tortricidae Cacoecimorpha pronubana
stem scale Eriococcidae Acanthococcus melnikensis
stem scale Eriococcidae Acanthococcus aceris
stem scale Diaspididae Dynaspidiotus britannicus
leaf scale Aleyrodidae Aleurotuba jelinekii
stem scale Coccidae Saissetia oleae
stem scale rarely Diaspididae Aulacaspis rosae
leaf scale Coccidae Protopulvinaria pyriformis
leaf vagrant Aphididae Aphis gossypii
leaf vagrant Aphididae Aphis spiraecola

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 26.x.2022