mealybug
mea·ly·bug
noun
1.
scale-like plant-eating insect coated with a powdery waxy secretion; destructive especially of fruit trees
Origin
From mealy + bug, from the appearance of the powder which resembles meal (“flour”).
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.