(Miridae) This family is the most important family of the Bug order as it includes about 10,400 species distributed into 1300 genera existing in all regions. Some species are predatory whereas some are herbivorous. The herbivorous species are often connected with plant genera or families. They mainly eat young leaves, flowers and fruits and sometimes pollen of some species. The predatory species can be associated with some specific species of prey that are sometimes pest for crops such as mealybug. In this case, these predators are a valuable aid to agriculture.