Annulorhina mandapamensis K. P. Rao, 1968
- Location
- Petti San, Tulamben, Pulau Bali, Indonesia
- Date
- 2014/01/15
- Length
- 20mm
- Depth
- ??m
- Water temperature
- 29.7℃
Description
A small species reaching about 8–10 mm in length. The body is pale with fine brown speckling. The cerata are inflated and bear rounded tubercles arranged in two rings, with a bright yellow-orange subapical band and a pink to purple band just below it. The rhinophores carry three to five evenly spaced ring-like ridges, which give the genus its name Annulorhina.Distribution
Originally described from intertidal rocks at Mandapam, Gulf of Mannar, south-eastern India. Subsequently recorded from the Indian Ocean and the Indo-West Pacific.Etymology
Named after the type locality, Mandapam in southern India.Remarks
Erected as the type species of Annulorhina by K. P. Rao in 1968. The genus was long subsumed within Eubranchus, but was reinstated by Korshunova et al. 2025 based on molecular phylogeny and morphology. Some authors have considered this species conspecific with Eubranchus rubropunctatus Edmunds, 1969.References
- Annulorhina mandapamensis gen. et sp. nov., Rao K.P. (1968). On a new genus and some new species of opisthobranchiate gastropods of the family Eubranchidae from the Gulf of Mannar. Proceedings of the Symposium on Mollusca held at Cochin, 1968. Symposium Series 3, part 1: 51-60. Marine Biological Association of India, Mandapam Camp.
- Eubranchus sp. 8, 中野理枝. (2004). 本州のウミウシ. ラトルズ.
- ホリミノウミウシ属の1種 1, 小野篤司. (2004). 沖縄のウミウシ. ラトルズ.
- Eubranchus mandapamensis, Terrence Gosliner, Ángel Valdés and David Behrens. (2015). Nudibranch and Sea Slug Identification Indo-Pacific. New World Pubns Inc.
- ツノワホリミノウミウシ(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.
- ツノトゲホリミノウミウシ（改称）, 中野理枝. (2018). 日本のウミウシ. 文一総合出版.
- Eubranchus sp. 1, Terrence Gosliner, Ángel Valdés and David Behrens. (2018). Nudibranch and Sea Slug Identification Indo-Pacific 2nd Edition. New World Pubns Inc.
- Annulorhina Rao, 1968, reinstated (type species A. mandapamensis Rao, 1968), Korshunova T., Fletcher K. & Martynov A. (2025). The endless forms are the most differentiated—how taxonomic pseudo-optimization masked natural diversity and evolution: the nudibranch case. Zoological Journal of the Linnean Society. 204(4): zlaf057. https://doi.org/10.1093/zoolinnean/zlaf057
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, Annulorhina mandapamensis, is included in the book.
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Academic Database
Sea slug observation data is available in international marine biodiversity databases.