Body broader than Aeolidiella sanguinea. Notum translucent white with opaque brown flecks concentrated locally into dense brown markings. Distance between bases of oral tentacles about three times thickness of tentacle base. Translucent white rhinophores and cerata with opaque white and brown freckling. Large white cnidosacs visible in apices of cerata.

Length 19 mm. Outer Hebrides, Scotland. April 2018. Leg. S. Taylor.