April 10, 2000
From: Narongpon Sittithaweepat
I can't identify this nudibranch. I found it at Surin Island. I found to depth 70-50 feet and date 14 November 1999. I think it is genus Reticulidia sp.
email@example.comSittithaweepat. N., 2000 (Apr 10) Halgerda sp. from Thailand. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/2239
In a photo it's a bit difficult to be sure, but I think this is a species of Halgerda with the gills retracted into the gill pocket, rather than a species of Reticulidia, which like all phyllidiids, would have no dorsal circlet of gills.
If it is a Halgerda I think it is an unnamed species. Not many species have been described with a white line along the mantle ridges.
Halgerda xishaensis Lin, 1975, is brown with white ridges and dark brown 'knobs' or tubercles at the junction of the ridges.
H. dalanghita has a pale whitish line edged in brownish spots, and H. albocristata has secondary white lines radiating out from the tubercles. It also has a white border with black lines at right angles to the mantle edge.
None of these species have large black or dark spots in the 'valleys' as in this animal from Surin Island. It is an interesting find Narongpon. It looks quite similar to Halgerda sp. 4. from Kerama Island, but that animal was probably a juvenile, so it hard to compare them.
Reticulidia suzanneae from Sodwana Bay, S. Africa
From: Colin Ogden, October 2, 2009
Re : Reticulidia suzanneae from Mayotte
From: Marina Poddubetskaia, December 9, 2003
Reticulidia suzanneae from Mayotte
From: Marina Poddubetskaia, December 6, 2003
Reticulidia suzanneae from Comoros
From: Valeria Safonova, June 27, 2002
Reticulidia suzanneae from East Africa
From: Bernard Picton , May 24, 2002
Reticulidia suzanneae from Thailand
From: David Behrens, May 24, 2002
Reticulidia sp? from Thailand
From: Erwin Koehler, February 2, 2001
Reticulidia not Halgerda
From: Narongpon Sittithaweepat , April 11, 2000