Dermatobranchus dendronephthyphagus is a species of sea slug, a nudibranch, a marine gastropod mollusc in the family Arminidae.

[2] This species occurs in the Indo-Pacific region.

It was described from Okinawa, Ryukyu Islands, Japan.

A specimen from Eastern Australia identified as Dermatobranchus nigropunctatus is probably a misidentification of this species.

[3][1]