Hypselodoris regina

Hypselodoris regina is a conspicuous species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae.[2]

Hypselodoris regina
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Order: Nudibranchia
Suborder: Doridina
Superfamily: Doridoidea
Family: Chromodorididae
Genus: Hypselodoris
Species:
H. regina
Binomial name
Hypselodoris regina
Marcus & Marcus, 1970[1]

Distribution

This nudibranch was described from one specimen collected at Nosy Tanikely, south of Nosy Be, Madagascar amongst coral at 2 m depth.[1] It has been reported from South Africa[3], Tanzania[4] and Mozambique.[5] It is known only from the Western Indian Ocean.[6]

Description

Hypselodoris regina has an orange body with typically three black longitudinal lines separated by two elongate orange patches and a white background on its dorsum. There is a continuous or broken orange margin to the mantle. The gills and rhinophores are orange, sometimes outlined in white. This nudibranch is similar in appearance to Chromodoris colemani and Chromodoris hamiltoni, an example of mimicry.[7]

This species can reach a total length of at least 40 mm and has been observed feeding on sponges from the genus Dysidea.[6]

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gollark: But unless you have an *actual security reason* I would disagree with that.
gollark: > This status code is commonly used when the server does not wish to reveal exactly why the request has been refused,That's the use I was talking about, I guess, but not always relevant.
gollark: 10.4.5 404 Not Found The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address. This status code is commonly used when the server does not wish to reveal exactly why the request has been refused, or when no other response is applicable.
gollark: I can't ctrl+F that in RFC 2616.

References
  1. Marcus Ev. & Marcus Er. (1970). Some gastropods from Madagascar and west Mexico. Malacologia. 10(1): 181-223, page(s): 199, figs 54-59
  2. MolluscaBase (2018). Hypselodoris regina Ev. Marcus & Er. Marcus, 1970. Accessed on 2019-01-20.
  3. Gosliner, T.M., Behrens, D.W. & Valdés, Á. (2008) Indo-Pacific nudibranchs and sea slugs: a field guide to the world’s most diverse fauna. Sea Challengers Natural History Books, California Academy of Sciences, San Francisco, 426 pp.
  4. Rudman, W.B. (1977) Chromodorid opisthobranch Mollusca from East Africa and the tropical West Pacific. Zoological Journal of the Linnean Society, 61: 351-397
  5. Tibiriçá, Y.; Pola, M.; Cervera, J. L. (2017). Astonishing diversity revealed: an annotated and illustrated inventory of Nudipleura (Gastropoda: Heterobranchia) from Mozambique. Zootaxa. 4359 (1): 001–133, p. 37, fig. 11B
  6. Rudman, W.B., 2000 (January 17) Hypselodoris regina Marcus & Marcus, 1970. [In] Sea Slug Forum. Australian Museum, Sydney.
  7. Gosliner, T.M., Behrens, D.W. & Valdés, Á., 2018. Nudibranch and Sea Slug Identification - Indo-Pacific. New World Publications; 2nd Revised, Updated edition. 452 pp. ISBN 1878348671, ISBN 978-1878348678, p. 188
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