plant louse

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plant louse:

see aphidaphid
or plant louse,
tiny, usually green, soft-bodied, pear-shaped insect injurious to vegetation. It is also called greenfly and blight. Aphids are mostly under 1-4 in. (6 mm) long.
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References in periodicals archive ?
The Commonwealth Agricultural Bureaux International (Cabi) says the Japanese jumping plant louse, or psyllid, which attaches itself to plants and sucks out their sap, is effective against Japanese knotweed in the Far East.
The parasite in question is a Japanese jumping plant louse or psyllid which attaches itself to plants and sucks out their sap.
The jumping plant louse genus Calophya Low (Hemiptera: Calophyidae) is species rich in the Neotropic, Nearctic, Oriental and East Palaearctic regions but rare in Australia and almost entirely absent from Africa.