Trinchesia anulata is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Trinchesiidae.

[2] This species was described from the Echizen Coast, Fukui Prefecture, north-west coast of Honshu, Japan.

It has also been reported from the Izu Peninsula, Shizuoka Prefecture on the opposite coast of Honshu.

[3]