Plant Parasites of Europe

leafminers, galls and fungi

Celtis australis

european nettle tree

organ parasitic mode stage note taxonomic group parasite
stem scale Coccidae Saissetia oleae
stem scale Margarodidae Icerya seychellarum
leaf hidden Thripidae Thrips tabaci
dead wood borer Cerambycidae Chlorophorus sartor
dead wood borer Cerambycidae Stenopterus flavicornis
dead wood borer Cerambycidae Necydalis ulmi
dead wood borer Cerambycidae Aegosoma scabricorne
dead wood borer Cerambycidae Xylotrechus stebbingi
root borer Cerambycidae Vesperus luridus
stem scale Diaspididae Pseudaulacaspis pentagona
leaf leaf spot Mycosphaerellaceae Sirosporium celtidis
leaf vagrant Pentatomidae Peribalus strictus
leaf vagrant Erebidae Exophyla rectangularis
leaf vagrant Aphididae Aphis gossypii
leaf vagrant Nymphalidae Nymphalis polychloros
leaf hidden Tortricidae Archips xylosteana
leaf vagrant Geometridae Erannis defoliaria
leaf vagrant Nymphalidae Libythea celtis
stem borer Buprestidae Agrilus auricollis
stem borer Buprestidae Acmaeoderella adspersula
stem borer Buprestidae Acmaeodera cylindrica
stem borer Buprestidae Anthaxia deaurata
stem borer Buprestidae Chrysobothris dorsata
stem borer Buprestidae Agrilus hastulifer
stem scale Diaspididae Lepidosaphes conchiformis
leaf vagrant summer generation Aphididae Aphis fabae
leaf bud gall Eriophyidae Aceria bezzii
leaf down Erysiphales Erysiphe celtidis
leaf gall Eriophyidae Reckella celtis
leaf gall Taphrinales Taphrina celtidis
leaf miner Agromyzidae Agromyza trebinjensis
leaf miner Gracillariidae Caloptilia fidella
leaf miner Gracillariidae Phyllonorycter millierella
leaf vagrant Aphididae Aulacorthum solani
leaf vagrant Aphididae Aphis spiraecola
leaf vagrant summer generation Aphididae Myzus persicae


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.ii.2024