Gymnodoris inornata (Bergh, 1880)
- Location
- Nanki kushimoto, Wakayama, Japan
- Date
- 2019/03/23
- Length
- ??mm
- Depth
- 0.0m
- Water temperature
- ??℃
Description
A medium-sized Gymnodoris. The living animal is entirely white throughout. The body is the standard gymnodorid type; the rhinophore club bears about 15 thin lamellae and the gill comprises 12 leaves. Preserved specimens reach 2.5 cm in length, 0.8 cm in height and width; gill leaves up to 2.5 mm high; foot up to 4 mm wide.Distribution
Type locality: the Japanese sea. Subsequently recorded across the Indo-West Pacific in shallow rocky-reef and sandy-bottom habitats.Etymology
The Latin inornatus (feminine inornata) is the privative in- + ornatus ("adorned"), meaning "without ornament, unadorned" — referring to the entirely white, unmarked body.Remarks
Originally placed in Trevelyana, the species was subsequently transferred to Gymnodoris, establishing the current combination. Gymnodoris is the type genus of the family Gymnodorididae; like other members of the family, this species is a carnivorous predator of other sea slugs.References
- Trevelyana inornata Bgh. n. sp., Bergh R. (1880). Beiträge zur Kenntniss der japanischen Nudibranchien. I. Verhandlungen der kaiserlich-königlichen zoologisch-botanischen Gesellschaft in Wien. 30: 155-200, Taf. I-V.
- キヌハダウミウシ(新称), Baba, K. 1930. Studies on Japanese nudibranchs (1). Polyceridae. Venus 2(1)
- キヌハダウミウシ, 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.
- キヌハダウミウシ, 鈴木敬宇. (2000). ウミウシガイドブック〈2〉. TBSブリタニカ.
- 高岡生物研究会. (2002). 日本海のウミウシ. 第2版.
- キヌハダウミウシ, 小野篤司. (2004). 沖縄のウミウシ. ラトルズ.
- キヌハダウミウシ, 中野理枝. (2004). 本州のウミウシ. ラトルズ.
- キヌハダウミウシ, 小野篤司 & 加藤昌一. (2009). ウミウシ. 誠文堂新光社.
A Kindle field guide by the site author
Kimoto N. (2026). Sea Slugs of Japan & the Indo-Pacific, 2nd Edition.
Kindle Edition
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Photos of Gymnodoris inornata
Same Genus Nudibranchs
Similar Colors Nudibranchs
Academic Database
Sea slug observation data is available in international marine biodiversity databases.