any of several scalelike, homopterous insects of the families Pseudococcidae and Eriococcidae that are covered with a powdery wax secretion and feed on plants.

1815–25; mealy + bug1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To mealybug
Example sentences
Heavy infestation of papaya mealybug on papaya stem.
The heavy use of organophosphate and carbamate insecticides to control the mealybug increases risk to workers and the environment.
Note the two droplets on the large mealybug in the center.
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