Hypolimnas octocula marianensis

Hypolimnas octocula marianensis, known as the Mariana eight-spot butterfly or forest flicker, is a subspecies of Hypolimnas octocula, the eight-spot butterfly.

The species is in found on Guam and Saipan in the Mariana Islands and feeds on two host plants: Procris pedunculata and Elatostema calcareum. These two herbs grow only on karst limestone forest. It occurs with certainty only on Guam and is a candidate for listing under the Endangered Species Act. The Mariana eight-spot butterfly suffers from numerous threats, including habitat destruction, competition from introduced species and increased predation from ants and wasps.