OKINAWAN
OPISTHOBRANCH OF THE WEEK

Hallaxa indecora (Bergh, 1905) 8mm

Opisthobranch of the Week Data

Taxonomy:

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


Species Account:

        Hallaxa indecora is considered to be rare on Okinawa as I've seen and collected a total of six individuals; the initial specimen was collected on the 30th of May, 1991. The above featured animal was found crawling on the surface on a reef flat of a mostly dead stony coral reef.

        This small cryptic species is reported from Indonesia, the Gulf of Aden, the Gulf of Suez, New Caledonia, Japan (Baba, 1949), and more recently, from Okinawa (Gosliner & Johnson, 1994). In life, the animal has a light plum-colored appearance, and a smooth notum as well as having the rhinophores and gills exhibiting a uniform purplish-brown color.

Literature Cited:


Page Date: 24 Apr '00
Page Modification Date: 24 Apr '00
Digitally manipulated photo
Copyright © 2000 Robert F. Bolland