scale insect

noun
any of numerous small, plant-sucking homopterous insects of the superfamily Coccoidea, the males of which are winged and the females wingless, often covered by a waxy secretion resembling scales.

Origin:
1830–40

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Collins
World English Dictionary
scale insect
 
n
any small homopterous insect of the family Coccidae and related families, which typically live and feed on plants and secrete a protective scale around themselves. Many species, such as the San Jose scale, are important pests

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
scale insect  
Any of various small homopterous insects of the superfamily Coccoidea that suck the juices of plants, the females of which secrete and remain under waxy scales on plant tissue.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
He is widely recognized as a world expert on scale insect identification and management.
The timing of the latter spray will depend on the specific scale insect and geographic location of the trees.
The scale insect has been under eradication in the county.
Trees of the citrus species, which are attacked by scale insect, are usually the ones fumigated.
Images for scale insect
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