To the causal observer Coccoidae are about as exciting as bumps on a log. Because thats pretty much what they look like. But for those bold enough to look below the surface an unusual world of bizarre morphology and behavior is revealed. Upon venturing deeper to the molecular level the reward is an amazing array of chromosome systems and reproductive strategies. Why scale insects evolved such a diverse range of genetic systems remains unclear.
Some females have the ability to retain the developing eggs inside prior to hatching.
Some form an ovisac similar to marsupials made of wax filaments. Most have the capacity to harden the body to form a scale-like structure or build actual scales for protection as in the armoured scale insects Diaspididae. Coccoids are the only known insects in which hermaphroditism occurs. Although most coccoids are biparental many are uniparental, reproducing parthenogenically. Seven kinds of parthenogenesis are observed in coccoids.