Polycera risbeci Odhner, 1941
- Location
- Red Beach, Okinawa Island (East coast), Okinawa, Japan
- Date
- 2015/02/12
- Length
- 8mm
- Depth
- 12.0m
- Water temperature
- 20.7℃
Description
A small polycerid dorid reaching about 8 mm in body length. The background colour is moss-green to yellowish-brown. The dorsum is scattered with wart-like tubercles and crossed by numerous dark-brown transverse lines. The anterior margin of the head bears a row of several appendages. The rhinophores have prominent lamellae and end in a small papillate tip; their colour matches the body. The gills are translucent moss-green to yellowish brown.Distribution
Originally described by Odhner (1941) from material taken around New Caledonia. Subsequently recorded across the Indo-West Pacific, including Tanzania, Papua New Guinea, Indonesia, the Philippines, and Japan.Etymology
The specific epithet risbeci honours the French zoologist Jean Risbec, who studied the opisthobranchs of New Caledonia.References
A Kindle field guide by the site author
Kimoto N. (2026). Sea Slugs of Japan & the Indo-Pacific, 2nd Edition.
Kindle Edition
View on Amazon PR (Amazon Associates)Seasonality
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Photos of Polycera risbeci
Tag:
Same Genus Nudibranchs
Similar Colors Nudibranchs
Academic Database
Sea slug observation data is available in international marine biodiversity databases.