Halgerda cf. graphica
off Ulladulla Harbour, south coast of New South Wales, Australia, 15 metres. In a sponge garden. 70mm long. PHOTO: Tony Karacsonyi
It is very similar in colour to Halgerda graphica but differs in having a band around the mantle border of black lines arranged at right angles to the edge.Authorship details
Rudman, W.B., 2000 (May 27) Halgerda cf. graphica [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/halgcfgr
May 27, 2000
From: Tony Karacsonyi
Could you please help me identify this nudibranch I photographed in a sponge garden outside Ulladulla Harbour, on the south coast of New South Wales, Australia at a depth of about 15 metres. It was about 70mm long.
firstname.lastname@example.orgKaracsonyi, T., 2000 (May 27) Halgerda from Ulladulla. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/2416
Thanks for the photo. This is quite an interesting find and has features of both Halgerda graphica, which was described from South Australia, and the tropical Halgerda willeyi which is sometimes found in the New South Wales.
I think we would need to see a few more specimens to get an idea of its colour range, and look at its anatomy, before I could give you any good idea on whether it is an unnamde species or a colour variety of a known species.