Thecacera sp. 1(18mm)
Photo by Atsushi Ono

Opisthobranch of the Week Data


Frequency on Okinawa: Collection Data:
[brackets indicate range for all Okinawa-collected specimens of the species]

Species Account:

        This attractive little polycerid, Thecacera sp. 1 is unknown from Okinawa's main island as of early-December, 2010 and is undescribed. The above featured animal is one which was photographed from a sandy bottom environment off of Zamami Island, one of a series of islands in the Kerama Islands Group, which are located 30 ~ 40 kilometers west of the Okinawa capitol, Naha. This featured animal was photographed by Atsushi Ono during April of 2009 in twenty-five meters of water. Atsushi's photograph is used here with his kind permission. It should be noted that Atsushi considers the species to be very rare in the Kerama Islands as he has seen to date only the above featured animal (pers. comm.).

        Previously on these pages I've featured three described Thecacera species:

Thecacera pacifica
T. picta
T. pennigera

        * Keramas = the Kerama Islands Group, located 30 ~ 40 kilometers west of the Okinawa capitol, Naha.

Page Date: 06 Dec '10
Page Modification Date: 06 Dec '10
Digitally manipulated photo
Copyright © 2010 Robert F. Bolland