Noun | 1. | ![]() coccid insect - scale insects and mealybugs family Pseudococcidae, Pseudococcidae - scalelike insects: mealybugs citrophilous mealybug, citrophilus mealybug, Pseudococcus fragilis - destructive especially to citrus Comstock mealybug, Comstock's mealybug, Pseudococcus comstocki - Asiatic insect introduced accidentally into United States; pest on citrus and apple trees citrus mealybug, Planococcus citri - feeds on a wide variety of cultivated plants but especially destructive to citrus |