Phyllidiella nigra is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Phyllidiidae.
Phyllidiella nigra can reach a length of about 25âÂÂ75 mm. It shows a black background with rounded pink to purplish tubercles over the dorsum. These tubercles are mainly isolated or in small clumps.
This species was described from Java, Indonesia. It is reported to be widespread in the Indo-west Pacific region.
This species occurs on shallow coral reefs, at depths of about 1âÂÂ6 m.