Bulbaeolidia alba (Risbec, 1928)
- Location
- Sunabe Water Treatment Plants, Okinawa Island (Chatan and Southern area), Okinawa, Japan
- Date
- 2014/12/10
- Length
- 7mm
- Depth
- 5.0m
- Water temperature
- 23.0℃
Description
Ground colour white to translucent yellowish white, with the dorsum overlaid by milky white pigment. Cerata usually the same colour as the body but sometimes pink; cerata short, lying back along the body except near the tail where they stand upright. Rhinophores translucent pale brown with scattered yellowish-white and brown pigment, and a raised annular ring at mid-height and another just below the tip. The eyes lie near the base of the rhinophores and are encircled by vermilion lines. The animal moves with a characteristic anteroposterior rocking motion. Reaches 15 mm.Distribution
New Caledonia (type locality: Pointe d'Artillerie); Australia (neotype locality: Nelson Bay, New South Wales); South Africa, Tanzania, Seychelles, Papua New Guinea, Indonesia, Philippines, Japan, Midway Atoll, Hawaii.Etymology
Latin alba, "white."Remarks
Originally described as Aeolidiella alba Risbec, 1928. As Risbec's type material is no longer extant, a neotype from Nelson Bay (NSW, Australia) was designated by Carmona et al. 2014, who also moved the species to Bulbaeolidia.References
- Aeolidiella alba, Risbec J. (1928). Contribution à l'étude des nudibranches néo-calédoniens. Faune des Colonies françaises, Tome II: 1-328, 12 pls. (Société d'Éditions géographiques, maritimes et coloniales, Paris). [doctoral thesis monograph]
- 高岡生物研究会. (2002). 日本海のウミウシ. 第2版.
- Bulbaeolidia alba comb. nov., Carmona L., Pola M., Gosliner T.M. & Cervera J.L. 2014. Review of Baeolidia, the largest genus of Aeolidiidae (Mollusca: Nudibranchia), with the description of five new species. Zootaxa, 3802 (4): 477–514.
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 Bulbaeolidia alba
Same Genus Nudibranchs
Similar Colors Nudibranchs
Academic Database
Sea slug observation data is available in international marine biodiversity databases.