clade Euthyneura clade Nudipleura clade Nudibranchia clade Dexiarchia clade Cladobranchia Cuthona rubescens (Picton & Brown, 1978) Rubramoena rubescens is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusk in the family Fionidae.

[2] This species was described from St. John's Point, Dunkineely, County Donegal, Ireland.

It has been reported from the NE Atlantic from Norway south to Cornwall.

[3] The typical adult size of this species is 12–15 mm.

It is very similar to Rubramoena amoena, apart from differences in the colour pattern.