Cuthona is a genus of nudibranch in the family Tergipedidae.
Ecology
Cuthona species feed on hydroids, and have uniseriate radulae with polydentate radular teeth.
Taxonomic history
The type species of Cuthona is Cuthona nana, (Alder & Hancock, 1842). Some authorities consider the genera Catriona and Trinchesia to be synonymous with Cuthona. Most Cuthona species were transferred to other genera as a result of DNA phylogeny studies in 2016 and 2017.
Species
Species in the genus Cuthona include: Cuthona divae (Er. Marcus, 1961) Cuthona methana Valdés, Lundsten & N. G. Wilson, 2018 Cuthona nana (Alder & Hancock, 1842) Cuthona hermitophila Martynov, Sanamyan & Korshunova, 2015