Flabellina rubrolineata (O'Donoghue, 1929) 14mm
OPISTHOBRANCH OF THE WEEK
Opisthobranch of the Week Data
Frequency on Okinawa:
- Order: NUDIBRANCHIA
- Suborder: Aeolidina
- Family: Flabellinidae
[brackets indicate range for all Okinawa-collected specimens of the species]
- Individual Collection No: RFB #3349-D
- Location: Tengan Pier, Okinawa (26o24.0'N, 127o51.1'E)
- Date: 7 January, 1995 [only a single collected indiv.]
- Depth: 40ft (12m) [only a single collected indiv.]
- Water temperature at collection depth: 66.0oF (18.9oC)
- Size: TL 14mm [only a single collected indiv.]
- Specimen deposited: California Academy of Sciences
Flabellina rubrolineata is considered to be very rare as this is the only specimen I've seen / collected here on Okinawa. The species was initially reported in Japan by Baba (1955: 26, pl. 13, as Coryphellina rubrolineata). The above featured animal was found crawling on a 2m vertical hydroid-covered spar, located in open sand approximately 30m from the pier itself. The pink body and cerata allowed the animal to stand out, even among the dense stand of hydroids.
Flabellina rubrolineata is widely distributed in the Indo-Pacific tropics (Gosliner & Willan. 1991) and it is one of six described Flabellina species presented on these pages. These six species known from Okinawan waters are:
F. rubrolineata - the above featured animal
- Baba, K. 1955. Opisthobranchia of Sagami Bay: Supplement. Iwanami Shoten, Tokyo. 59pp., 20 pls.
- Gosliner, T. M., & R. C. Willan. 1991. Review of the Flabellinidae (Nudibranchia: Aeolidacea) from the tropical Indo-Pacific, with the descriptions of five new species. Veliger 34(2):97-133.
Page Date: 30 Oct '00
Page Modification Date: 01 Sep '13
Digitally manipulated photo
Copyright © 2013 Robert F. Bolland