Mealybugs are insects in the family Pseudococcidae, unarmored scale insects found in moist, warm climates. They are considered pests as they feed on plant juices of greenhouse plants, house plants and subtropical trees and also act as a vector for several plant diseases. Mealybugs occur in all parts of the world. Mealybugs are sexually dimorphic: ... Found on http://en.wikipedia.org/wiki/Mealybug
any of a group of small, sap-sucking insects (order Homoptera) that are worldwide in distribution and attack citrus trees and ornamental plants, ... [3 related articles] Found on http://www.britannica.com/eb/a-z/m/60