Elysia lobata A. A. Gould, 1852
- Location
- Horse Shoes, Okinawa Island (Onna and Yomitan area), Okinawa, Japan
- Date
- 2014/11/29
- Length
- 5mm
- Depth
- 5.0m
- Water temperature
- 23.0℃
Description
Ground colour yellowish green to bluish green, with scattered white spots and often black spots over the parapodial surface. The parapodial margin is ashy white to purplish black with a submarginal chrome-yellow line. The rhinophores are faintly blackish near the tip and bear a yellow band about midway. Typical body length is around 10 mm, reaching about 15 mm.Distribution
The type locality is Oahu, Hawaii, based on material collected by the United States Exploring Expedition (1838-1842). Recorded from the Hawaiian Islands, Marshall Islands, and Japan (Takarajima of the Tokara group, Okinawa, and the Kerama Islands).Etymology
From the Latin lobatus (lobed), referring to the mantle margin which Gould described as expanded into three-lobed lateral wings, i.e. the strongly undulating parapodial edge.Remarks
Elysia tokarensis Baba, 1957, described from three specimens (about 15 mm in length) collected at Takarajima in the Tokara group in May 1953, is regarded as a junior synonym. The Japanese name "トカラミドリガイ" was coined by the 1957 study when he established E. tokarensis.References
- Elysia lobata n. sp., Gould A.A. (1852). Mollusca and Shells. United States Exploring Expedition during the years 1838, 1839, 1840, 1841, 1842, under the command of Charles Wilkes, U.S.N. Vol. 12. Boston: Gould & Lincoln. xv + 510 pp.
- Elysia (Elysia) tokarensis BABA, n. sp. Tokara-midorigai (n.n.), Baba K. (1957). THE SPECIES OF THE GENUS ELYSIA FROM JAPAN. Publications of the Seto Marine Biological Laboratory. 6(1): 69-74. https://doi.org/10.5134/174573
- フチドリミドリガイ（新称）, 鈴木敬宇. (2000). ウミウシガイドブック〈2〉. TBSブリタニカ.
- トカラミドリガイ, 小野篤司. (2004). 沖縄のウミウシ. ラトルズ.
- トカラミドリガイ, 中野理枝. (2004). 本州のウミウシ. ラトルズ.
- トカラミドリガイ, 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.
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Photos of Elysia lobata
Tag:
Same Genus Nudibranchs
Similar Colors Nudibranchs
Academic Database
Sea slug observation data is available in international marine biodiversity databases.