Thorunna montrouzieri Rudman, 1995 (11mm)
OPISTHOBRANCH OF THE WEEK
Opisthobranch of the Week Data
Frequency on Okinawa:
- Order: NUDIBRANCHIA
- Suborder: Doridina
- Family: Chromodorididae
[brackets indicate range for all Okinawa-collected specimens of the species]
- Individual Collection No: RFB #2544-C
- Location: Horseshoe Cliffs, Okinawa (26o30.0'N, 127o50.9'E)
- Date: 17 May, 1991 [only a single specimen]
- Depth: 140ft (43m) [only a single specimen]
- Water temperature at collection depth: Not recorded
- Size: TL 11mm [only a single specimen]
- Specimen deposited: California Academy of Sciences
Thorunna montrouzieri is considered to be very rare on Okinawa as I have seen and collected only the single above featured animal. It was collected from a vertical rock wall at the reef edge; the wall was covered with an array of cnidaria, porifera, bryozoa, and others.
Rudman (1995) chose to name this attractive chromodorid after Father Xavier Montrouzier, who was a pioneering student of the flora and fauna of New Caledonia during the second half of the nineteenth century.
Thorunna montrouzieri is one of six described species of Thorunna known from Okinawan waters. The six species are:
- Rudman, W.B. 1995. The Chromodorididae (Opisthobranchia: Mollusca) of the Indo-West Pacific: further species from New Caledonia and the Noumea romeri colour group. Molluscan Research, 16: 1-43.
Page Date: 26 Jun '00
Page Modification Date: 23 Feb '04
Digitally manipulated photo
Copyright © 2004 Robert F. Bolland