This scale is present on the leaves, bark and fruit of its hosts. Although it has never been a major pest in ornamental nurseries it is often a serious pest of palms. Abgrallaspis cyanophylli is classified as an armored scale. Armored scales feed on plant juices. This scale is classified as an armored scale.
Armored scales lose their legs and antennae after the first molt.
Females are always wingless and remain under their scale their entire life. Males have one pair of membranous wings, move about actively in search of females and do not feed during the adult stage. Except for a few species that birth live young, most armored scale species lay eggs. Abgrallaspis cyanophylli is an egg laying species. Eggs are protected underneath the scale or shell of the mother insect until they hatch.