# 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