Cuthona

Cuthona is a genus of nudibranch in the family 	Cuthonidae.

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


 * Species brought into synonymy:
 * Cuthona abronia ( MacFarland, 1966) : synonym of Abronica abronia
 * Cuthona abyssicola (Bergh, 1884) : synonym of Cuthonella abyssicola Bergh, 1884
 * Cuthona acinosa ( Risbec, 1928) : synonym of Tenellia acinosa
 * Cuthona akibai Baba, 1984 : synonym of Tenellia akibai
 * Cuthona albocrusta (MacFarland, 1966) : synonym of Tenellia albocrusta
 * Cuthona albopunctata (Schmekel, 1968) : synonym of Tenellia albopunctata
 * Cuthona alpha Baba & Hamatani, 1963 : synonym of Tenellia alpha (Baba & Hamatani, 1963)
 * Cuthona amoena (Alder & Hancock, 1845) : synonym of Rubramoena amoena
 * Cuthona antarctica (Pfeffer in Martens & Pfeffer, 1886) : synonym of Tenellia antarctica
 * Cuthona anulata (Baba, 1949) : synonym of Tenellia anulata
 * Cuthona barbadiana Edmunds & Just, 1983 : synonym of Tenellia barbadiana
 * Cuthona behrensi Hermosillo & Valdés, 2007 : synonym of Tenellia behrensi
 * Cuthona berghi (Friele, 1902) : synonym of Cuthonella berghi
 * Cuthona beta (Baba & Abe, 1964) : synonym of Tenellia beta
 * Cuthona bractea Burn, 1962 : synonym of Tularia bractea (Burn, 1962)
 * Cuthona caerulea (Montagu, 1804) synonym of Trinchesia caerulea
 * Cuthona claviformis Vicente, 1974 : synonym of Tenellia claviformis
 * Cuthona cocoachroma Williams & Gosliner, 1979 : synonym of Cuthonella cocoachroma
 * Cuthona columbiana (O'Donoghue, 1922) : synonym of Tenellia columbiana
 * Cuthona concinna (Alder & Hancock, 1843) : synonym of Cuthonella concinna
 * Cuthona correai Ortea, Caballer & Moro, 2002 : synonym of Tenellia correai
 * Cuthona crinita Minichev, 1972 : synonym of Tenellia crinita
 * Cuthona destinyae Hermosillo & Valdés, 2007 : synonym of Tenellia destinyae
 * Cuthona diminutiva Gosliner, 1980 : synonym of Tenellia diminutiva
 * Cuthona distans Odhner, 1922 : synonym of Tenellia distans
 * Cuthona diversicolor Baba, 1975 : synonym of Tenellia diversicolor
 * Cuthona elenae (Martynov, 2000) : synonym of Cuthonella elenae
 * Cuthona elioti Odhner, 1944 : synonym of Cuthonella elioti
 * Cuthona ferruginea (Friele, 1902) : synonym of Cuthonella ferruginea
 * Cuthona fidenciae (Ortea, Moro & Espinosa, 1999) : synonym of Tenellia fidenciae
 * Cuthona flavovulta (MacFarland, 1966) : synonym of Tenellia flavovulta
 * Cuthona foliata (Forbes & Goodsir, 1839) : synonym of Tenellia foliata
 * Cuthona fructuosa (Bergh, 1892) : synonym of Tenellia fructuosa
 * Cuthona fulgens (MacFarland, 1966) : synonym of Tenellia fulgens
 * Cuthona futairo Baba, 1963 : synonym of Tenellia futairo
 * Cuthona genovae (O'Donoghue, 1929) : synonym of Tenellia genovae
 * Cuthona georgiana (Pfeffer in Martens & Pfeffer, 1886) : synonym of Tenellia georgiana
 * Cuthona giarannae Valdés, Moran & Woods, 2012 : synonym of Tenellia giarannae
 * Cuthona granosa (Schmekel, 1966) : synonym of Tenellia granosa
 * Cuthona gymnota (Couthouy, 1838) : synonym of Tenellia gymnota
 * Cuthona hamanni Behrens, 1987 : synonym of Tenellia hamanni
 * Cuthona henrici Eliot, 1916 : synonym of Tenellia henrici
 * Cuthona herrerai Ortea, Moro & Caballer, 2002 : synonym of Tenellia herrerai
 * Cuthona hiemalis Roginskaya, 1987 : synonym of Cuthonella hiemalis (Roginskaya, 1987)
 * Cuthona ilonae (Schmekel, 1968) : synonym of Tenellia ilonae
 * Cuthona iris Edmunds & Just, 1983 : synonym of Tenellia iris
 * Cuthona japonica Baba, 1937 : synonym of Godiva japonica (Baba, 1937)
 * Cuthona kanga (Edmunds, 1970) : synonym of Tenellia kanga
 * Cuthona kuiteri Rudman, 1981 : synonym of Tenellia kuiteri
 * Cuthona lagunae (O'Donoghue, 1926) : synonym of Tenellia lagunae
 * Cuthona leopardina (Vayssière, 1888) : synonym of Tenellia leopardina
 * Cuthona lizae Angulo-Campillo & Valdés, 2003 : synonym of Tenellia lizae
 * Cuthona longi Behrens, 1985 : synonym of Tenellia longi
 * Cuthona luciae Valdés, Medrano & Bhave, 2016 : synonym of Tenellia luciae
 * Cuthona macquariensis (Burn, 1973) : synonym of Tenellia macquariensis
 * Cuthona marisalbi Roginskaya, 1963 : synonym of Cuthonella concinna (Alder & Hancock, 1843)
 * Cuthona millenae Hermosillo & Valdés, 2007 : synonym of Tenellia millenae
 * Cuthona miniostriata (Schmekel, 1968) : synonym of Tenellia miniostriata
 * Cuthona modesta (Eliot, 1907) : synonym of Cuthonella modesta
 * Cuthona netsica (Er. Marcus & Ev. Marcus, 1960) : synonym of Tenellia netsica
 * Cuthona norvegica (Odhner, 1929) : synonym of Cuthonella norvegica
 * Cuthona ocellata (Schmekel, 1966) : synonym of Tenellia ocellata
 * Cuthona odhneri Er. Marcus, 1959 : synonym of Tenellia odhneri
 * Cuthona ornata Baba, 1937 : synonym of Tenellia ornata
 * Cuthona pallida (Eliot, 1906) : synonym of Tenellia pallida
 * Cuthona paucicirra Minichev, 1972 : synonym of Tenellia paucicirra
 * Cuthona perca (Er. Marcus, 1958) : synonym of Tenellia perca
 * Cuthona peregrina (Gmelin, 1791) : synonym of Cratena peregrina (Gmelin, 1791)
 * Cuthona phoenix Gosliner, 1981 : synonym of Tenellia phoenix
 * Cuthona pinnifera (Baba, 1949) : synonym of Tenellia pinnifera
 * Cuthona poritophages Rudman, 1979 : synonym of Tenellia poritophages
 * Cuthona puellula (Baba, 1955) : synonym of Tenellia puellula
 * Cuthona pumilio Bergh, 1871 : synonym of Tenellia pumilio
 * Cuthona punicea Millen, 1986 : synonym of Tenellia punicea
 * Cuthona purpureoanulata (Baba, 1961) : synonym of Abronica purpureoanulata
 * Cuthona pusilla (Bergh, 1898) : synonym of Tenellia pusilla
 * Cuthona pustulata (Alder & Hancock, 1854) : synonym of Tenellia pustulata
 * Cuthona riosi Hermosillo & Valdés, 2008 : synonym of Tenellia riosi
 * Cuthona rolleri Gosliner & Behrens, 1988 : synonym of Tenellia rolleri
 * Cuthona rosea MacFarland, 1966 : synonym of Cuthona divae (Marcus, 1961)
 * Cuthona rubescens Picton & Brown, 1978 : synonym of Rubramoena rubescens
 * Cuthona rubra (Edmunds, 1964) : synonym of Tenellia rubra
 * Cuthona rutila (MacFarland, 1966 as Cratena rutila) : synonym of Tenellia lagunae (O'Donoghue, 1926)
 * Cuthona schraderi (Pfeffer in Martens & Pfeffer, 1886) : synonym of Guyvalvoria paradoxa (Eliot, 1907) (nomen dubium)
 * Cuthona scintillans Miller, 1977 : synonym of Tenellia scintillans
 * Cuthona sibogae (Bergh, 1905) : synonym of Tenellia sibogae
 * Cuthona spadix (MacFarland, 1966 as Cratena spadix) : synonym of Tenellia columbiana (O'Donoghue, 1922)
 * Cuthona speciosa (Macnae, 1954) : synonym of Tenellia speciosa
 * Cuthona stimpsoni A. E. Verrill, 1879 : synonym of Flabellina salmonacea (Couthouy, 1838)
 * Cuthona suecica (Odhner, 1940) : synonym of Tenellia suecica
 * Cuthona thompsoni Garcia, Lopez-Gonzalez & Garcia-Gomez, 1991 : synonym of Tenellia thompsoni
 * Cuthona tina (Er. Marcus, 1957) : synonym of Tenellia tina
 * Cuthona valentini (Eliot, 1907) : synonym of Tenellia valentini
 * Cuthona veronicae (A. E. Verrill, 1880) : synonym of Tenellia veronicae
 * Cuthona virens (MacFarland, 1966) : synonym of Tenellia virens
 * Cuthona viridis (Forbes, 1840) : synonym of Tenellia viridis
 * Cuthona willani Cervera, Garcia-Gomez & Lopez-Gonzalez, 1992 : synonym of Tenellia willani
 * Cuthona yamasui Hamatani, 1993 : synonym of Tenellia yamasui
 * Cuthona zelandica Odhner, 1924 : synonym of Tenellia zelandica