Jorunna cf. pantherina (Angas, 1864)

Description

A medium-sized dorid reaching about 42 mm in body length and 15 mm in width. The body is elongate-elliptical. In life the ground colour is olivaceous-grey with darker small spots intermingled. The whole mantle is densely covered with small short setiform spines giving a velvety, shark-skin texture. The gills are very large and numerous (specific number not stated), retractile, forming a cup-like circle around the anus, the same colour as the mantle. Angas's type was a single 42 mm long, 15 mm wide specimen.

Distribution

Western and southern Pacific. Type locality: Coodgee Bay (south of Sydney), New South Wales, Australia, based on a single specimen collected by Angas in September. Subsequently recorded from the Hawaiian Islands, southern Japan, the Philippines, Indonesia and other western Pacific localities. The "cf. pantherina" qualifier in the database reflects uncertainty over the conspecificity of Japanese material with Angas's Australian type.

Etymology

The specific epithet pantherina is the feminine of Latin pantherinus ("panther-like"), in reference to the panther-fur-like dense fine spinous covering of the dorsum and the spotted ground colour.

Remarks

Originally placed by Angas in Doris. Later transferred to Jorunna; the parentheses in the author citation reflect this generic transfer. The Japanese name "トトロウミウシ" ("Totoro slug") refers to the velvety dorsum evoking the title character of Hayao Miyazaki's animated film "My Neighbour Totoro".

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References

• Doris pantherina Angas n. sp., Angas G.F. (1864). Description d'espèces nouvelles appartenant à plusieurs genres de Mollusques Nudibranches des environs de Port-Jackson (Nouvelle-Galles du Sud), accompagnée de dessins faits d'après nature. Journal de Conchyliologie, 12(1): 43-70, pl. IV.
• トトロウミウシ（新称:トトロ海牛）, Hori S. & Fukuda H. (1996). Opisthobranchia of Yamaguchi Prefecture, western Honshu, Japan — Part 1. The Yuriyagai.
• ミナミヒョウモンウミウシ（新称）, Baba, K. 2000. A new records of Jorunna pantherina (Angas, 1864) from the Japan Sea coasts of Middle Japan, with the anatomy of the same species from Kada, Osaka Bay, Pacific coast of Middle Japan. JANOLUS No.102.
• Jorunna pantherina (Angas, 1864), Camacho-Garcia Y.E. & Gosliner T.M. (2008). Systematic revision of Jorunna Bergh, 1876 (Nudibranchia: Discodorididae) with a morphological phylogenetic analysis. Journal of Molluscan Studies. 74(2): 143-181. https://doi.org/10.1093/mollus/eyn002
• ゴマフビロードウミウシ属の一種 Jorunna sp., 柏尾翔, 川瀬基弘, 鵜飼普, 大矢美紀, 西浩孝 & 浅田要. (2021). 愛知県南知多町の潮間帯に生息するウミウシ類 I(裸鰓目). なごやの生物多様性. 8: 1-22.