This species was described from Indonesia.[1] It was previously treated as a synonym of Phestilla lugubris but is now considered distinct due to differences in larval development and adult morphology to be a distinct species.[4]
^Rudman, W.B. (April 1981). "Further studies on the anatomy and ecology of opisthobranch molluscs feeding on the scleractinian coral Porites". Zoological Journal of the Linnean Society. 71 (4): 373–412. doi:10.1111/j.1096-3642.1981.tb01136.x.