Known from temperate and subtropical South Africa from Cape Point to Transkei (Gosliner & Johnson, 1999)
Intertidal pool, Algoa Bay, Eastern Cape, nr Port Elizabeth, South Africa. 30mm long alive, 1971. Photo: Robin Stobbs.
Very similar in colour to Hypselodoris carnea. Gosliner & Johnson (1999) differentiate the two by noting that in H. carnea the background colour is opaque white while in H. capensis it is more pale pink. Gosliner (1987) suggests that H. capensis also differs in having a broken purple margin around the anterior end. There are of course anatomical differences.
• Gosliner, T.M., (1987) Nudibranchs of Southern Africa
• Gosliner, T.M. & Johnson, R.F. (1999) Phylogeny of Hypselodoris (Nudibranchia: Chromodorididae) with a review of the monophyletic clade of Indo-Pacific species, including descriptions of twelve new species. Zoological Journal of the Linnean Society, 125: 1-114.
Rudman, W.B., 2000 (July 19) Hypselodoris capensis (Barnard, 1927). [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/hypscape
October 11, 2003
From: Charles Rowe
Here is a photo of Hypselodoris capensis taken at Whitesands, Port Elizabeth, South Africa, 16 August 2003 at 14 metres
email@example.comRowe, C., 2003 (Oct 11) Hypselodoris capensis from Port Elizabeth. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11170
August 22, 2003
From: Rudolph van Jaarsveld
Here are two photos of Hypselodoris capensis. Photos taken off Port Elizabeth, South Africa, 18 July 2003, depth 14 meters.
van Jaarsveld, R., 2003 (Aug 22) Hypselodoris capensis from South Africa. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/10721
As I have discussed elsewhere, this species and Hypselodoris carnea are difficult to distinguish externally. However Port Elisabeth seems to be safely south of the geographic limit of H. carnea. The pale bluish sponge looks as though it could be likely food of this species
March 12, 2003
From: Valda Fraser
Locality: Cape St Francis, Eastern Cape, South Africa
Date: Jan 2003
firstname.lastname@example.orgFraser, V., 2003 (Mar 12) Is this Hypselodoris capensis?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/9079
These two species seem very dificult to distinguish externally. From the earlier discussion on the Forum, and Terry's message, I think you are probably right. Terry suggests that H. capensis doesn't usually extend as far north as Hypselodoris carnea, so also on geographic grounds, it is a good bet this is H. capensis.