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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.]
(Animals) any homopterous insect of the family Psyllidae, which comprises the jumping plant lice. See plant louse2
[C19: from Greek psulla flea]
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|Noun||1.||psyllid - 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