Mariaglaja inornata (Baba, 1949)
- Location
- Tengan(Kombu), Okinawa Island (East coast), Okinawa, Japan
- Date
- 2015/06/25
- Length
- 10mm
- Depth
- 5.0m
- Water temperature
- 28.0℃
Description
A very small aglajid, body length about 15 mm, with a body shape resembling that of Chelidonura hirundinina. Ground colour blackish-purple, with white fine dots densely scattered on the outer faces of the parapodia and on the dorsum, except on the head-shield surface and the mantle dorsum, which lack white dots. A broad white curved band runs along the anterior margin of the head-shield, with both ends turning yellow. The outer edges of both parapodia are white.Distribution
Type locality is Hayama-Koiso, Sagami Bay (intertidal, September 1940, single specimen). The original description records the species from Sagami Bay and from the Ogasawara (Bonin) Islands.Etymology
The specific epithet inornata is Latin for unadorned. The original description does not give an explicit etymology paragraph; the descriptive sense contrasts with the brightly tri-coloured Chelidonura hirundinina.Remarks
Originally described as Chelidonura inornata and later transferred to Mariaglaja (following the 2018 Aglajidae phylogenetic revision by Zamora-Silva & Malaquias). The Japanese name "Ohaguro-tsubamegai" likens the blackish-purple ground colour to traditional Japanese tooth-blackening dye.References
- Mariaglaja inornata (Baba, 1949), 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.
- Chelidonura inornata BABA, 1949. Ohaguro-tsubamegai., Baba K. & Abe T. (1959). THE GENUS CHELIDONURA AND A NEW SPECIES, C. TSURUGENSIS, FROM JAPAN. Publications of the Seto Marine Biological Laboratory. 7(2): 279-280. https://doi.org/10.5134/174605
- アカテンオハグロツバメガイ（仮称）, 小野篤司. (1999). ウミウシガイドブック. TBSブリタニカ.
- オハグロツバメガイ, 小野篤司. (2004). 沖縄のウミウシ. ラトルズ.
- オハグロツバメガイ, 中野理枝. (2004). 本州のウミウシ. ラトルズ.
- Chelidonura inornata, Terrence Gosliner, Ángel Valdés and David Behrens. (2015). Nudibranch and Sea Slug Identification Indo-Pacific. New World Pubns Inc.
- Andrea Zamora-Silva and Manuel António E. Malaquias Molecular phylogeny of the Aglajidae head-shield sea slugs (Heterobranchia: Cephalaspidea): new evolutionary lineages revealed and proposal of a new classification Zoological Journal of the Linnean Society, 2017
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.
New World Publications
This species, Mariaglaja inornata, is included in the book.
View on Amazon PR (Amazon Associates)Seasonality
Shooting Locations
Loading shooting locations...
Photos of Mariaglaja inornata
Same Genus Nudibranchs
Similar Colors Nudibranchs
Academic Database
Sea slug observation data is available in international marine biodiversity databases.