الفهرس 
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Abstract
INTRODUCTION
Several hundred mealybug species are well known and most plants are susceptible to one or more of these insects. Some species, like the citrus mealybug and obscure mealybug , exitted on many different hosts throughout mid-winter areas.Mealybugs tend to congregate in large numbers, forming white, cottony masses on plants. High population slow plant growth and black sooty mold are the primary damage caused by the most mealybugs.Also, high population can cause plant decline, and young plants may be killed.
Scale insects are common and damaging insect pests. They are easily overlooked because they are small and immobile Most of their Lives do not resemble most other insect.