Hypselodoris decorata (Risbec, 1928)
- Location
- Tengan(Kombu), Okinawa Island (East coast), Okinawa, Japan
- Date
- 2015/06/23
- Length
- 12mm
- Depth
- 5.0m
- Water temperature
- 27.0℃
Description
Very similar to Hypselodoris maculosa but reliably distinguished by having three (rather than two) coloured rings on the rhinophore club. The body bears scattered fine white and purple spots, especially anteriorly and posteriorly. In the radula, the middle-lateral teeth of H. decorata have only 3-4 denticles versus 4-5 in H. maculosa; the receptaculum seminis lies just below the bursa rather than near the uterine duct (Gosliner & Johnson, 1999).Distribution
New Caledonia (type locality), Indonesia, Philippines, Papua New Guinea, Vanuatu, Malaysia, Marshall Islands.Etymology
Latin decorata, "adorned, decorated."Remarks
H. decorata and H. maculosa are sympatric in the Marshall Islands, Papua New Guinea, and the Philippines. In the second edition of "Sea Slugs of Japan," the name Hypselodoris yarae is misapplied to this species; true H. yarae lacks the anterior and posterior white spotting.References
- Chromodoris decorata, Risbec J. (1928). Contribution à l'étude des nudibranches néo-calédoniens. Faune des Colonies françaises, Tome II: 1-328, 12 pls. (Société d'Éditions géographiques, maritimes et coloniales, Paris). [doctoral thesis monograph]
- Hypselodoris decorata, Baba, K. (1994). Descriptions of four new, rare or unrecorded species of Hypselodoris (Nudibranchia: Chromodorididae) from Japan. Venus. 53(3): 175-187. page(s): 175
- センテンイロウミウシ, 殿塚孝昌. (2003). ウミウシガイドブック〈3〉. TBSブリタニカ.
- Hypselodoris decorata, 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.
- Hypselodoris maculosa, Terrence Gosliner, Ángel Valdés and David Behrens. (2015). Nudibranch and Sea Slug Identification Indo-Pacific. New World Pubns Inc.
- シロウネイロウミウシ*(新称), 中野理枝, 朝倉知子, 池田紫, 石川雅教, 今本淳, 岩瀬南美, 西田和記, 堀江諒, 山田久子 & 渡井久美. (2017). 奄美大島北部海域における後鰓類相の調査報告. Kuroshio Biosphere. 13: 1-18 + 6 pls.
- センテンイロウミウシ、シロウネイロウミウシ, 中野理枝. (2018). 日本のウミウシ. 文一総合出版.
- Hypselodoris decorata, Terrence Gosliner, Ángel Valdés and David Behrens. (2018). Nudibranch and Sea Slug Identification Indo-Pacific 2nd Edition. New World Pubns Inc.
- Epstein H.E., Hallas J.M., Johnson R.F., Lopez A. & Gosliner T.M. (2019). Reading between the lines: revealing cryptic species diversity and colour patterns in Hypselodoris nudibranchs (Mollusca: Heterobranchia: Chromodorididae). Zoological Journal of the Linnean Society. 186(1): 116-189. https://doi.org/10.1093/zoolinnean/zly048
- センテンイロウミウシ, シロウネイロウミウシ, 中野理枝. (2019). 日本のウミウシ. 第二版. 文一総合出版.
Featured in this book
Terrence Gosliner, Ángel Valdés and David Behrens. (2018). Nudibranch and Sea Slug Identification Indo-Pacific 2nd Edition. New World Pubns Inc.
New World Publications
This species, Hypselodoris decorata, is included in the book.
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Tag:
Same Genus Nudibranchs
Similar Colors Nudibranchs
Academic Database
Sea slug observation data is available in international marine biodiversity databases.