FEATURED OKINAWAN MARINE INVERTEBRATE
Baseodiscus quinquelineatus Quoy & Gaimard, 1833 (size not recorded)
Featured Invertebrate Data
Frequency on Okinawa:
- Phylum: Nemertea
- Class: Anopla
- Order: Heteronemertea
- Family: Valenciniidae
[brackets indicate range for all Okinawa-collected specimens of the species]
- Individual Collection No: RFB #2350
- Location: Seragaki Tombs, Okinawa (26o 30.4'N, 127o 52.6'E) [Horseshoe Cliffs, Onna Flats, Seragaki Tombs]
- Date: 21 April, 1990 [30 Jun '89, 21 Apr '90, 09 Jun '90, 17 Sep '00]
- Depth: 5ft (1.5m) [Intertidal, 5ft, 10ft]
- Water temperature at collection depth: Not recorded
- Size: Not recorded
- Specimen deposited: Smithsonian National Museum of Natural History (NMNH)
Baseodiscus quinquelineatus, commonly referred to as the Five-lined Ribbon Worm is considered to be uncommon on Okinawa (four collected specimens as well as seeing perhaps an additional half dozen or so individuals over a period of more than twenty years of Okinawa diving). As to the Okinawan specimens, the five parallel body lines are often not obvious and looking at images of some of the featured animals only three of the lines are apparent. Unfortunately I didn't have access to the description of B. quinquelineatus (Quoy & Gaimard (1833). Collected specimens were relaxed in propylene phenoxetol and fixed 24-hrs in buffered formaldehyde, then transferred to 70% ETOH.
Special thanks to Jon Norenburg at the NMNH for the identification of this nemertine. Specimens have been deposited at the NMNH, but as yet have not been catalogued.
I've added a second page w/ several images Baseodiscus quinquelineatus.
- The specific epithet quinquelineatus is from the Latin quinque, meaning "five" and lineatus meaning "lined", having reference to the five parallel lines on the outside of the animal's body.
- Quoy J. R. C. and Gaimard P. (1833) Voyage de Découvertes de l'Astrolabe Exécuté par Ordre du Roi, Pendant les Années 1826-1827-1828-1829, Sous le Commandement de M. J. Dumont D'Urville: J. Tastu, Paris. (Publication not seen by RFB)
Page Date: 01 May '17
Page Modification Date: 01 Apr '18
Digitally manipulated photo
Copyright © 2018 Robert F. Bolland