''Risbecia'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of colorful

sea slug Sea slug is a common name for some marine invertebrates with varying levels of resemblance to terrestrial slugs. Most creatures known as sea slugs are gastropods, i.e. they are sea snails (marine gastropod mollusks) that over evolutionary t ...

s, dorid nudibranchs, shell-less

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

s in the family Chromodorididae.Caballer, M. (2011). Risbecia Odhner, 1934. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=204668 on 9 June 2012 In 2012, the genus ''Risbecia'' became a synonym of ''

Hypselodoris ''Hypselodoris'' is a genus of colourful sea slugs or dorid nudibranchs, marine gastropod mollusks in the family Chromodorididae.MolluscaBase (2018)''Hypselodoris'' Stimpson, 1855.Accessed on 2018-09-16. Modern usage follows a more restricted v ...

'' Stimpson, 1855 Johnson R.F. & Gosliner T.M. (2012) Traditional taxonomic groupings mask evolutionary history: A molecular phylogeny and new classification of the chromodorid nudibranchs. PLoS ONE 7(4): e33479
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Species

The following species in the genus ''Risbecia'' have not been reallocated yet (June 2012): * ''

Risbecia nyalya ''Risbecia nyalya'' is a species of colourful sea slug or dorid nudibranch, a marine (ocean), marine gastropod mollusk in the family (biology), family Chromodorididae.Caballer, M. (2011). Risbecia nyalya (Ev. Marcus & Er. Marcus, 1967). Accessed ...

'' (Ev. Marcus & Er. Marcus, 1967) * '' Risbecia versicolor'' (Risbec, 1828) ; Species brought into synonymy: * ''Risbecia apolegma'' Yonow, 2001: synonym of ''

Hypselodoris apolegma ''Hypselodoris apolegma'' is a species of colourful sea slug or dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae. Taxonomic history Recent phylogenetic data confirm the validity of the species and suggest a sister speci ...

'' (Yonow, 2001) * ''Risbecia bullockii'' (Collingwood, 1881): synonym of ''

Hypselodoris bullockii ''Hypselodoris bullockii'' is a species of colourful sea slug or dorid nudibranch, a marine gastropod mollusc in the family Chromodorididae. ''Hypselodoris bullockii'' is quite pale purple in colour. It has been mistaken for a number of other sp ...

'' (Collingwood, 1881) * ''Risbecia francoisi'' Odhner, 1934: synonym of ''Risbecia tryoni'' (Garrett, 1873) * ''Risbecia ghardaqana'' (Gohar & Aboul-Ela, 1957): synonym of ''

Hypselodoris ghardaqana ''Hypselodoris ghardaqana'' is a species of sea slug, a dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae.Bouchet, P. (2012)''Hypselodoris ghardaqana''.Accessed through: World Register of Marine Species on 2012-06-09 D ...

'' (Gohar & Aboul-Ela, 1957) * ''Risbecia godeffroyana'' (

Bergh Bergh is a former municipality in the Dutch province of Gelderland. The municipality included the villages of 's-Heerenberg, Zeddam, and Stokkum. In 2005, it merged with Didam to form the new municipality of Montferland Montferland () is ...

, 1877): synonym of '' Hypselodoris godeffroyana'' (Bergh, 1877) * ''Risbecia imperialis'' (Pease, 1860): synonym of ''

Hypselodoris imperialis ''Hypselodoris imperialis'' is a species of sea slug, a dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae.Bouchet, P. (2012)''Hypselodoris imperialis''.Accessed through: World Register of Marine Species on 2012-06-09 Dis ...

'' (Pease, 1860) * ''Risbecia odhneri'' Risbec, 1953: synonym of ''Risbecia tryoni'' (Garrett, 1873) * ''Risbecia pulchella'' (Ruppell & Leuckart, 1828): synonym of ''

Hypselodoris pulchella ''Hypselodoris pulchella'' is a species of sea slug, a dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae.Bouchet, P. (2012)''Hypselodoris pulchella''.Accessed through: World Register of Marine Species on 2012-06-09 Des ...

'' (Rüppell & Leuckart, 1828) * ''Risbecia reticulata'' (Quoy & Gaimard, 1832): synonym of '' Chromodoris reticulata'' (Quoy & Gaimard, 1832) * ''

Risbecia tryoni ''Hypselodoris tryoni'' is a species of sea slug, a dorid nudibranch, a marine gastropod mollusk in the genus Chromodorididae.Caballer, M. (2011)''Hypselodoris tryoni'' (Garrett, 1873).Accessed through: World Register of Marine Species on 9 Augus ...

'' (Garrett, 1873): synonym of '' Hypselodoris tryoni'' (Garrett, 1873)

References

* Franc A. (1968) ''Sous-classe des Opisthobranches''. In: P. Grasse (Ed). Traite de Zoologie 5 (3): 608–893. page(s): 866 * Rudman W.B. (1984) ''The Chromodorididae (Opisthobranchia: Mollusca) of the Indo-West Pacific: a review of the genera''. Zoological Journal of the Linnean Society 81 (2/3): 115–273. page(s): 195 * Chromodorididae Gastropod genera {{chromodorididae-stub