Platydoris ellioti (Alder & Hancock, 1864) – Nudibranch Identification & Photos | SEASLUG.WORLD

クモガタウミウシ Platydoris ellioti

Location: Kamagane, Tago, Futou, Dougashima, Shizuoka, Japan
Date: 2015/06/24
Length: 50mm
Depth: 18.0m
Water temperature: 19.1℃

MORPHOLOGY

The body shape is flat and wide (Fig. 6C). The dorsum is covered with large caryophyllidia. The rhinophoral and branchial sheaths are elevated. The branchial sheath has six branchial lobes, with the anterior and posterior ones being larger than the others. The gill is composed of six tripinnate branchial leaves. The rhinophores have 29 lamellae. The dorsal colour is tan with small, dark blotches. The gill is brown-green, and the rhinophores are tan. Around the outer edge of the dorsum is a ring of darker green-grey pigment. The ventral side of the dorsum is yellow and has a ring of large dark spots (Figs 2D, 6D). The foot is a slightly darker shade of yellow. In the preserved specimen, the yellow has faded to a cream colour and the spots are brownish.

DISTRIBUTION

This species is known from India (Alder & Hancock 1864), Japan (Baba 1949), New Caledonia (Risbec 1928) and Papua New Guinea (present paper).

References

くもがたうみうし(新称), 藤田經信. (1894). 相州三浦三崎近傍ノ隱鰓うみうし科 (Cryptobranchiate Dorididae)(第五拾七號ノ續キ). 動物學雜誌. 6(63): 10-13.
おおえらうみうし（新稱）, 内田清之助ほか. (1927). 日本動物圖鑑. 北隆館.
クモガタウミウシ, Baba K. (1949). Opisthobranchia of Sagami Bay collected by His Majesty the Emperor of Japan (相模湾産後鰓類図譜). Iwanami Shoten, Tokyo. 4+2+194+7 pp., pls. 1-50.
クモガタウミウシ Platydoris speciosa, 鈴木敬宇. (2000). ウミウシガイドブック〈2〉. TBSブリタニカ.
Dorgan K.M., Valdés Á. & Gosliner T.M. (2002). Phylogenetic systematics of the genus Platydoris (Mollusca, Nudibranchia, Doridoidea) with descriptions of six new species. Zoologica Scripta. 31(3): 271-319. https://doi.org/10.1046/j.1463-6409.2002.00105.x
高岡生物研究会. (2002). 日本海のウミウシ. 第2版.
クモガタウミウシ Platydoris speciosa, 中野理枝. (2004). 本州のウミウシ. ラトルズ.
クモガタウミウシ, 小野篤司 & 加藤昌一. (2009). ウミウシ. 誠文堂新光社.
クモガタウミウシ, 中野理枝. (2018). 日本のウミウシ. 文一総合出版.
Platydoris ellioti, Terrence Gosliner, Ángel Valdés and David Behrens. (2018). Nudibranch and Sea Slug Identification Indo-Pacific 2nd Edition. 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. cover

Terrence Gosliner, Ángel Valdés and David Behrens. (2018). Nudibranch and Sea Slug Identification Indo-Pacific 2nd Edition. New World Pubns Inc.

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KIMOTO Nobuhiko
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Academic Database

Sea slug observation data is available in international marine biodiversity databases.

BISMaL OBIS DOI: 10.48518/00032

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