Thorunna punicea is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Chromodorididae.[1]
This species was described from Passe de Koumac, New Caledonia, -20.6783°N 178.7°W.[2]
This species is similar in coloration to Hypselodoris melanesica and Mexichromis albofimbria. It has a purple mantle with a thin white margin and darker purple bases to the rhinophores and gills.