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Any of various plant-feeding insects of the superfamily Psylloidea, closely related to and resembling the aphids, some of which are pests of fruit trees, ornamentals, and crops.

[New Latin Psylla, type genus (from Greek psulla, flea) + -id.]


(ˈsɪlɪd) or


(Animals) any homopterous insect of the family Psyllidae, which comprises the jumping plant lice. See plant louse2
[C19: from Greek psulla flea]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.psyllid - small active cicada-like insect with hind legs adapted for leapingpsyllid - small active cicada-like insect with hind legs adapted for leaping; feeds on plant juices
plant louse, louse - any of several small insects especially aphids that feed by sucking the juices from plants
References in periodicals archive ?
Since 2005, the Florida citrus industry has been struggling to combat a disease known as "greening", a bacterium that is spread by common bugs called psyllids.
The lack of differences in the susceptibility of the psyllids to flupyradifurone in the evaluated
First, psyllids cause direct injury to citrus through feeding on phloem juice in immature foliage, deforming the leaves (Halbert and Manjunath 2004); and second, and more importantly, they vector the bacterium Candidatus Liberibacter asiaticus (CLas), which causes the lethal and untreatable citrus disease, huanglongbing (HLB), also called citrus greening disease.
Psyllids are highly reproductive and difficult to control by means of classical pest control products.
inspect trees for Asian citrus psyllids that have been killed by a beneficial fungus.
A second group ("new flush") was trimmed 1 week before psyllid exposure, and a third group ("no flush") was trimmed just before the psyllids were released.
On the Chalcidoid Parasites of Psyllids (Hemiptera, Homoptera).
citri nymphs), as the other six species listed by Michaud (2004) were only observed nearby the psyllids or tending them (i.
Asian citrus psyllids Diaphorina citri (Sternorrhyncha: Psyllidae) and greening disease in citrus: A literature review and assessment of risk in Florida.
Myrtales: Myrtaceae) in citrus orchard showed positive effect on the reduction of psyllid infestation and the volatiles emitted from guava leaves exhibited repellent activities against the adult psyllids.
radiata were released into the cage when the psyllids population reached the third instars.
Inspect your trees at least monthly for signs of the pest and disease, especially in spring when the psyllids are most active.