"Blue-green" mealybugs are a group of related mealybug genera whose insides, during adulthood, are usually of the color which gives them their collective name.
[1] Alternately, this group may be referred to as blue-black mealybugs.
[2] It includes the genera Amonostherium, Australicoccus, Melanococus, and Nipaecoccus.
[3] While the exact relationships between various scale insects are often contested, one suggestion is to class all (and only) the blue-green mealybugs in the sub-family Trabutininae.
This article related to members of the insect superfamily Coccoidea is a stub.