Trinchesia ornata is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Trinchesiidae.MolluscaBase eds. (2026). MolluscaBase. Tenellia ornata (Baba, 1937). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=890632 on 2026-03-02Korshunova 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, Volume 204, Issue 4, August 2025, zlaf057,
Distribution This species was described from Japan. It has been reported from the Echizen Coast, Fukui Prefecture, north-west coast of Honshu, Japan and Hong Kong, South Korea and Peter the Great Bay, RussiaRudman, W.B., 2001 (August 9) Cuthona ornata Baba, 1937. [In] Sea Slug Forum. Australian Museum, Sydney.
References
Baba, K. (1937). Opisthobranchia of Japan (II). Journal of the Department of Agriculture, Kyushu Imperial University. 5(7):289-344, pls. 1-2 Liu J.Y. [Ruiyu] (ed.). (2008). Checklist of marine biota of China seas. China Science Press. 1267 pp.
External links
Baba, K. (1961). Three new species of the genus Catriona from Japan (Nudibranchia-Eolidacea). Publications of the Seto Marine Biological Laboratory. 9(2): 367-372 Burn, R. F. (2006). A checklist and bibliography of the Opisthobranchia (Mollusca: Gastropoda) of Victoria and the Bass Strait area, south-eastern Australia. Museum Victoria Science Reports. 10:1–42 Cella, K; Carmona Barnosi, L.; Ekimova, I; Chichvarkhin, A; Schepetov, D; Gosliner, T. M. (2016). A radical solution: The phylogeny of the nudibranch family Fionidae. PLoS ONE. 11(12): e0167800