Hypselodoris bullockii (Collingwood, 1881)
- Location
- Seisui, Amami Oshima, Kagoshima, Japan
- Date
- 2026/03/11
- Length
- ??mm
- Depth
- ??m
- Water temperature
- ??℃
Description
A chromodorid reaching about 45 mm in body length. Ground colour is white to ivory, the mantle margin outlined with a very fine white line. The rhinophores and gill are yellow, often tinted reddish-purple at the base, although colouration varies regionally and many individuals are uniformly yellow without the basal tint.The body is smooth and shows the typical flattened-oval shape of chromodorids.
Distribution
Widely distributed across the western, southern and central Pacific. Records come from New Caledonia, eastern Australia, Malaysia, Taiwan, Indonesia, the Philippines, Japan (south of central Honshū) and the Marshall Islands. It occurs on shallow to moderately deep coral and rocky reefs.Etymology
The specific epithet bullockii appears to honour a person named Bullock who was associated with the original describer, Collingwood 1881.Remarks
"Hadairo-umiushi" (Hypselodoris cf. bullockii) is treated as a regional variant of this species and is now considered a junior synonym. The species is sponge-feeding, with Dysidea reported as its main prey.References
- Hypselodoris bullockii, Stimpson W. (1855). Descriptions of some new marine Invertebrata. Proceedings of the Academy of Natural Sciences of Philadelphia. 7(10): 385-394.
- Hypselodoris bullocki (Collingwood, 1881), Gosliner T.M. & Johnson R.F. (1999). Phylogeny of Hypselodoris (Nudibranchia: Chromodorididae) with a review of the monophyletic clade of Indo-Pacific species, including descriptions of twelve new species. Zoological Journal of the Linnean Society. 125: 1-114. https://doi.org/10.1111/j.1096-3642.1999.tb00585.x
- ハゴロモウミウシ, 益田一. (1999). 海洋生物ガイドブック. 第2刷. 東海大学出版会.
- ブロッキィ, 小野篤司. (1999). ウミウシガイドブック. TBSブリタニカ.
- ゾウゲイロウミウシ（新称）, 小野篤司. (2000). ウミウシガイドブック. 第2版. TBSブリタニカ.
- ゾウゲイロウミウシ, 鈴木敬宇. (2000). ウミウシガイドブック〈2〉. TBSブリタニカ.
- ヒプセロドリス・ブロッキィ, 殿塚孝昌. (2003). ウミウシガイドブック〈3〉. TBSブリタニカ.
- ゾウゲイロウミウシ, 小野篤司. (2004). 沖縄のウミウシ. ラトルズ.
- ゾウゲイロウミウシ, 中野理枝. (2004). 本州のウミウシ. ラトルズ.
- ゾウゲイロウミウシ, 小野篤司 & 加藤昌一. (2009). ウミウシ. 誠文堂新光社.
- Hypselodoris bullockii, 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 bullockii, Terrence Gosliner, Ángel Valdés and David Behrens. (2015). Nudibranch and Sea Slug Identification Indo-Pacific. New World Pubns Inc.
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 bullockii, 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.