Also found in: Thesaurus, Wikipedia.


(ˈsɪl ə)

also psyl•lid


any jumping louse of the family Pysllidae, often a pest of fruit trees.
[< New Latin Psylla (1811), genus name < Greek psýlla flea]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.psylla - small active cicada-like insect with hind legs adapted for leapingpsylla - 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 ?
It is an active predator of psyllids (Rakhshani and Saeedifar, 2013) and of common pistachio psylla (Agonoscena pistaciae) which feeds on pistachio trees, Pistacia vera (Mehrnejad, 2010).
Classical biological control of Asian citrus psylla.
An excessive soil N availability in the summer may delay fruit maturation, have a negative impact on TSS, and decrease plant tolerance to pests and diseases as psylla (Cacopsylla pyri L.
A field study on synchrony between the populations of citrus Psylla, Diaphorina citri (Kuwayama) [sic.
On April 8, 2014, two pesticide applicators were driving tractor-pulled airblast sprayers to apply a mixture of pesticides to prevent psylla infestations in a pear orchard.
Evaluation of petroleum spray oils for control of the Asian citrus psylla, Diaphorina citri (Kuwayama) (Hemiptera: Psyllidae), in China.
Collier, who lives in East Wenatchee, owns a 6-acre pear orchard in the 2700 block of Malaga/Alcoa Highway, which, according to inspectors and enforcement agents of the Chelan-Douglas County Horticultural Pest and Disease Board, has been infested with codling moth, pear psylla, fire blight and grape mealy bugs since 2012.