Dermatobranchus caeruleomaculatus

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

Distribution
This species occurs in the Indo-Pacific region. It was described from Waterfall Bay, south side Tioman Island, east Malaysia. It is also known from Indonesia, the Philippines and Papua New Guinea.