Coriocella sp. 2 (73mm)
ANIMAL OF THE WEEK
Opisthobranch of the Week Data
Frequency on Okinawa:
- Class: Gastropoda
- Subclass: Prosobranchia
- Order: Mesogastropoda (Vetigastropoda)
- Family: Lamellariidae (Velutinidae)
[brackets indicate range for all Okinawa-collected specimens of the species]
- Individual Collection No: RFB #2523-H
- Location: Seragaki, Okinawa (26o 30.4'N, 127o 52.6'E) [Horseshoe, Seragaki]
- Date: 1 May, 1991 [29 Apr '87, 15 Jan '88, 3 Mar '89, 11 Jun '89, 6 May '90, 1 May '91, 15 Jul '91]
- Depth: 5ft (1.5m) [5ft, 10ft, 10ft, 20ft, 140ft, 140ft, 170ft]
- Water temperature at collection depth: Not recorded
- Size: TL 73mm [21mm, 29mm, 39mm, 67mm, 67mm, 73mm, 75mm]
- Specimen deposited: RFB Personal Research Collection
Coriocella sp. 2 is considered to be uncommon in the waters of Okinawa's main island. A total of seven individuals have been collected here as of late November, 2002. In addition to the above featured animal, I've added a second page with two additional specimens collected from 170ft and 20ft.
On the Sea Slug Forum Bill Rudman (1998) features a relatively large series of miscellaneous lamellariids including a similar animal to that of the above Coriocella sp. 2; this similar appearing animal is an image of a juvenile from Lifou [north east of New Caledonia] and was posted by Bill Rudman (2001). In this same posting on the "Forum", Bill mentions the animal is perhaps Coriocella nigra (Blainville, 1824).
I've recorded two separate species of Coriocella here on Okinawa's main island:
- Rudman, W.B., 2001 (Jan 16). Comment on Mystery from the Maldives by Nishina Masayoshi.
[Message In] Sea Slug Forum. http://www.seaslugforum.net/find.cfm?id=3521
- Rudman, W.B., 1998 (October 28). What are lamellariids & velutinids?
[In] Sea Slug Forum. http://seaslugforum.net/lamellar.htm
Page Date: 25 Nov '02
Page Modification Date: 25 Aug '03
Digitally manipulated photo
Copyright © 2003 Robert F. Bolland