Tambja amakusana Baba, 1987
Description
A small to medium-sized polycerid (Tambja) reaching about 20 mm in body length. Ground colour varies widely, from green through yellow-green to vermilion or brown. Some individuals show fine spots or longitudinal lines slightly brighter than the ground.The oral tentacles, the tips of the rhinophores and gill, and the tip of the tail are blue-purple, a diagnostic feature of the species.
Distribution
Western Pacific. Observation records come mainly from southern Japan. The species inhabits shallow to moderately deep coral and rocky reefs.Etymology
The specific epithet amakusana is a latinised form of "Amakusa", in reference to the Amakusa region of Kumamoto Prefecture, Japan, where Baba 1987 collected the type material.Remarks
The Japanese vernacular name "Komidori-ryūgū-umiushi" was proposed in Nakano & Nishida 2024 "Two new species of Tambja with green colouration from Japan". Pola et al. 2008 briefly assigned this species to Martadoris based on molecular phylogenetics, but subsequent verification has confirmed that Japanese specimens remain within Tambja.References
- コミドリリュウグウウミウシ （新種・新称） Tambja amakusana n. sp., Baba, K. 1987. Two new green-colored species of Tambja from Japan (Nudibranchia: Polyceridae). Venus 46(1):13-18.
- キヌハダウミウシ, 益田一. (1999). 海洋生物ガイドブック. 第2刷. 東海大学出版会.
- コミドリリュウグウウミウシ, 小野篤司. (1999). ウミウシガイドブック. TBSブリタニカ.
- コミドリリュウグウウミウシ, 鈴木敬宇. (2000). ウミウシガイドブック〈2〉. TBSブリタニカ.
- コミドリリュウグウウミウシ, 中野理枝. (2004). 本州のウミウシ. ラトルズ.
- コミドリリュウグウウミウシ, 小野篤司. (2004). 沖縄のウミウシ. ラトルズ.
- Tambja amakusana Baba, 1987, Pola M., Cervera J.L. & Gosliner T.M. (2005). Four new species of Tambja Burn, 1962 (Nudibranchia: Polyceridae) from the Indo-Pacific. Journal of Molluscan Studies. 71(3): 257-267. https://doi.org/10.1093/mollus/eyi034
- コミドリリュウグウウミウシ, 小野篤司 & 加藤昌一. (2009). ウミウシ. 誠文堂新光社.
- Tambja amakusana, Terrence Gosliner, Ángel Valdés and David Behrens. (2015). Nudibranch and Sea Slug Identification Indo-Pacific. New World Pubns Inc.
- Martadoris amakusana, Willan R.C. & Chang Y.-W. [Yen-Wei]. (2017). Description of three new species of Tambja (Gastropoda, Nudibranchia, Polyceridae) from the western Pacific Ocean reveals morphological characters with taxonomic and phylogenetic significance for traditional Polyceridae and related 'phaneorobranch' nudibranchs. Basteria. 81(1-3): 1-23.
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, Tambja amakusana, 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.