Plant Parasites of Europe

leafminers, galls and fungi

Juniperus communis

common juniper

synonym: Juniperus hibernica, intermedia

organ parasitic mode stage note taxonomic group parasite
leaf vagrant Diprionidae Monoctenus obscuratus
leaf leaf spot Mycosphaerellaceae Asperisporium juniperinum
leaf pustule Mycosphaerellaceae Stigmina glomerulosa
leaf pustule Exosporium deflectens
leaf pustule Sporocadaceae Synnemapestaloides foliicola
leaf leaf spot Phyllostictaceae Phyllosticta philoprina
stem pustule Ceratostoma juniperinum
stem kanker Coryneliaceae Hypsotheca nigra
stem kanker Leptospaeriaceae Coniothyrium juniperi
flower vagrant Acanthosomatidae Cyphostethus tristriatus
flower vagrant Pentatomidae Chlorochroa juniperina
leaf vagrant Miridae Phytocoris fieberi
predator Anthocoridae Brachysteles parvicornis
fruit vagrant Coreidae Gonocerus acuteangulatus
leaf vagrant Miridae Phoenicocoris obscurellus
leaf vagrant Miridae Dichrooscytus nanae
leaf vagrant Acanthosomatidae Elasmostethus interstinctus
seeds vagrant Lygaeidae Eremocoris fenestratus
predator Anthocoridae Cardiastethus fasciiventris
leaf predator Pentatomidae Chlorochroa pinicola
root vagrant Cydnidae Canthophorus melanopterus
leaf vagrant Pentatomidae Peribalus strictus
flower vagrant Lygaeidae Orsillus depressus
leaf vagrant Coreidae Gonocerus juniperi
leaf vagrant Miridae Pinalitus rufinervis
leaf vagrant Miridae Phytocoris parvulus
leaf vagrant Miridae Dichrooscytus gustavi
leaf vagrant Acanthosomatidae Cyphostethus tristriatus
stem borer Buprestidae Acmaeodera bipunctata
leaf vagrant Noctuidae Lithophane leautieri
leaf miner Gelechiidae Dichomeris marginella
stem hidden Tortricidae Lozotaeniodes cupressana
leaf vagrant doubtful Geometridae Macaria liturata
leaf vagrant Geometridae Eupithecia intricata
unknown vagrant Geometridae Eupithecia ericeata
leaf vagrant Geometridae Thera cognata
leaf vagrant Geometridae Thera juniperata
Geometridae Thera loeberbaueri
leaf vagrant Geometridae Ekboarmia sagnesi
leaf vagrant Geometridae Peribatodes rhomboidaria
leaf vagrant rarely Geometridae Peribatodes secundaria
flower borer Geometridae Eupithecia pusillata
stem borer Buprestidae Anthaxia istriana
flower borer Torymidae Megastigmus bipunctatus
stem borer Buprestidae Anthaxia quadripunctata
stem borer Buprestidae Acmaeoderella flavofasciata
stem borer Buprestidae Melanophila acuminata
stem borer Buprestidae Anthaxia helvetica
stem borer Buprestidae Lamprodila festiva
unknown unknown Aeolothripidae Ankothrips niezabitowskii
leaf vagrant adult Cercopidae Haematoloma dorsata
stem gall Melanosporales Phaeostoma juniperinum
stem borer Curculionidae Phloeosinus aubei
stem borer Curculionidae Phloeosinus thujae
root leaf spot Peronosporales Phytophthora austrocedri
flower hidden Thripidae Thrips juniperinus
stem vagrant Flatidae Metcalfa pruinosa
leaf vagrant Diprionidae Monoctenus juniperi
leaf hidden Gelechiidae Dichomeris juniperella
flower borer Tortricidae Pammene juniperana
leaf vagrant Gelechiidae Gelechia sabinellus
unknown unknown doubtful Tortricidae Cydia interscindana
leaf hidden Tortricidae Ditula angustiorana
leaf miner younger larva Tortricidae Archips oporana
leaf hidden older larva Tortricidae Archips oporana
leaf vagrant Tenuipalpidae Pentamerismus oregonensis
leaf vagrant Eriophyidae Acaricalus juniperi
leaf vagrant Eriophyidae Platyphytoptus juniperi
stem borer doubtful Sesiidae Synanthedon cephiformis
fruit borer Yponomeutidae Argyresthia praecocella
stem borer Yponomeutidae Argyresthia arceuthina
leaf scale Diaspididae Lineaspis striata
leaf leaf spot Gelechiidae Gelechia senticetella
leaf scale Diaspididae Carulaspis minima
leaf scale Diaspididae Carulaspis juniperi
stem borer Sesiidae Synanthedon vespiformis
stem borer Sesiidae Synanthedon spuleri
leaf miner Gelechiidae Chionodes electella
stem borer Tortricidae Cydia duplicana
fruit gall Phytoptidae Trisetacus quadrisetus
leaf bud gall Cecidomyiidae Oligotrophus gemmarum
leaf bud gall Cecidomyiidae Oligotrophus juniperinus
leaf bud gall Cecidomyiidae Oligotrophus panteli
leaf bud gall Cecidomyiidae Oligotrophus schmidti
leaf bud gall Cecidomyiidae Oligotrophus valerii
leaf bud gall Phytoptidae Trisetacus juniperinus
leaf miner Yponomeutidae Argyresthia abdominalis
leaf miner Yponomeutidae Argyresthia aurulentella
leaf miner Yponomeutidae Argyresthia dilectella
leaf miner Yponomeutidae Argyresthia reticulata
leaf pustule uredinia Pucciniales Gymnosporangium gaeumannii
leaf vagrant Aphididae Cinara juniperi
leaf vagrant Eriophyidae Eriophyes junipereti
leaf vagrant Eriophyidae Keiferella juniperici
stem pustule telia Pucciniales Gymnosporangium amelanchieris
stem pustule telia Pucciniales Gymnosporangium clavariiforme
stem pustule telia Pucciniales Gymnosporangium cornutum
stem pustule telia Pucciniales Gymnosporangium torminali-juniperini
stem pustule telia Pucciniales Gymnosporangium tremelloides
stem vagrant Aphididae Cinara smolandiae
stem vagrant Aphididae Cinara cupressi
stem vagrant Aphididae Cinara tujafiina
stem vagrant spring generation Aphididae Cinara mordvilkoi
stem scale Pseudococcidae Planococcus vovae
root vagrant summer generation Aphididae Gootiella alba
leaf vagrant Aphididae Aulacorthum solani
root vagrant summer generation Aphididae Gootiella tremulae
root vagrant summer generation Aphididae Cinara mordvilkoi


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 16.i.2023