Platydoris annulata
Dorgan, Valdes & Gosliner, 2002

Order: NUDIBRANCHIA
Suborder: DORIDINA
Superfamily: EUDORIDOIDEA

DISTRIBUTION

Known only from two records from deepwater off Philippines [166-172 m] and Thailand [303-313 m].

PHOTO

Locality: Andaman Sea, 303-313 m, Thailand, Indian Ocean, 22 February 2000, dredged with Agassiz trawl. Length: approx. 40 mm preserved. Photographer: Kathe Jensen.

The body is very flat and wide, as is usual in the genus, and the rhinophore and gill sheaths are elevated. In the original description the general colour of the preserved specimen is described as 'pale cream' but the photograph accompanying the description would be better describd as pale brown. There are a number of large dark brown rings, some of them irregular in shape, scattered over the dorsum, and each brown ring has a faint whitish ring outside. The underside is a uniform pale cream with no sign of darker markings. Platydoris ocellata also has dark brown rings, but they are much smaller and surround white spots. There are also differences in the reproductive anatomy.

  • K.M. Dorgan, A. Valdes and T.M. Gosliner. 2002. Phylogenetic systematics of the genus Platydoris (Mollusca, Nudibranchia, Doridoidea) with descriptions of six new species. Zoologica Scripta, 31: 271-319.
  • Jensen, K.R. 2008 The opisthobranch molluscs collected during the Thai-Danish BIOSHELF project in the Andaman Sea Thailand. Phuket Marine Biological Center Research Bulletin, 68: 21-30.
Authorship details
Rudman, W.B., 2008 (October 14) Platydoris annulata Dorgan, Valdes & Gosliner, 2002 . [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/platannu

Related messages


Re: Opisthobranchs from the Andaman Sea

October 15, 2008
From: Philip Cromwell

Concerning message #21954:

Dear Bill,
The link to Platydoris annulata is broken. It appears that there is no Factsheet for this species.

Regards,
Phil

aegir429@yahoo.com

Cromwell, P., 2008 (Oct 15) Re: Opisthobranchs from the Andaman Sea. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/21970

Dear Phil,
Thanks for drawing my attention to this. I apparently didn't prepare a Fact Sheet for this species because I had no photo to use. Kathe's photos have solved the problem.

Best wishes,
Bill Rudman

Rudman, W.B., 2008 (Oct 15). Comment on Re: Opisthobranchs from the Andaman Sea by Philip Cromwell. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/21970