Chromodoris michaeli

William Chee A pair of Anna's Dorid Nudibranchs taken from my recent trip to Gua Rajawali dive site at Tenggol Island, Terengganu, Malaysia. Olympus TG810& Housing pt051, ISO100, 0EV, f11, 1/30, internal flash, set camera to Program (macro on) & highest file size.

Marli Wakeling I believe that these are Chromodoris michaeli, given the gill colouration, white line on the edge of the notum, and pigmentation.

Scott White Sth Leyte

Gary Cobb This looks like Chromodoris michaeli Gosliner & Behrens, 1998

Scott White Thanks

Elodie Camprasse Hello Nudibranch Lovers! I am writing an article on nudibranchs in Vietnam and I'd like to be sure of the identification of species on the photos I am going to submit... Is this Chromodoris michaeli or quadricolor?

Erwin Koehler Chromodoris strigata Rudman, 1982

Elodie Camprasse great! thank you so much!!!

Jean-Philippe Imbert Salut Elodie et merci pour tes photos; J'ai un couple d'amis et leurs enfants, Zoé et Axel qui vont débarquer sur l'ile dans ces jours là. Je ne doute pas que tu le feras, mais fais un bisous de ma part aux enfants ...

Elodie Camprasse ben en fait, je ne serai plus sur l'île désolée... Je suis partie aujourd'hui... Je vais en Australie maintenant!

Jean-Philippe Imbert Tant pis. Bon courage pour la suite et fais nous paratger tes photos, c'est super. Bises. Jean-Phi.

Ryan Pearson Potentially Chromodoris strigata???

Blogie Robillo I'm not sure, but I think the solid yellow mantle band rules it out as C. michaeli?

Jeff Rosenfeld Chromodoris michaeli is correct.

Blogie Robillo I see. So confusing. And throw in C. dianae into the mix... :D

Erwin Koehler Here are many(!) C. michaeli http://www.philippine-sea-slugs.com/Nudibranchia/Euctenidiacea/Chromodoris_michaeli_02.htm

Deb Aston This may assist Blogie Robillo First one is Chromodoris annae, second is Chromodoris colemani and third is Chromodoris michaeli.

Blogie Robillo Hi Deb. The 3rd is C. michaeli? Sure doesn't look like it (but I'm no expert). :)

Blogie Robillo Which one is this, Chromodoris dianae or Chromodoris michaeli? Photo taken at a depth of 21m. Length: 2.5cm.

Roy Arthur David Lontoh Chromodoris sp.

Blogie Robillo Really? Undescribed? :(

Gary Cobb Where was is animal found??!

Gary Cobb This is Chromodoris michaeli Gosliner & Behrens, 1998

Blogie Robillo Gary, what makes this C. michaeli? I can't seem to differentiate it from C. dianae with any authority...

Blogie Robillo Thanks for the ID, Gary Cobb! I spotted it at a depth of 21m, size about 2.5cm. It was last 11 February 2012, at a dive site called Coral Gardens, off the eastern coast of Talikud Island, Davao Gulf, Philippines.

Franca Wermuth-Vezzoli Camiguin Island, Philippines. Please help to identify. Thanks a lot.

Antonello Nazareno .... Chromodoris dianae ....

Antonello Nazareno ... blue phase ...

Lindz Warren Possibly a pale Chromodoris annae Bergh, 1877?

Roy Arthur David Lontoh Chromodoris michaeli?

Marli Wakeling C. annae. The spots are the clue.

Erwin Koehler the orange tipped gills are not of C. annae, I go with C. dianae

Franca Wermuth-Vezzoli Thanks Erwin, I didn't look at the gills so far and now I learnt to differenciate the two Ch dianae and annae. But.. how about C michaeli? There are these darker patches behind the rhynophores and in the middle (similar to http://www.nudipixel.net/photo/00030690/3/). What do you think?

Lindz Warren definitely C. michaeli Gosliner & Behrens, 1998. See http://slugsite.us/bow/nudwk115.htm

Lindz Warren Likewise but have a read of the slugsite description of C. michaeli.

Lindz Warren It is a tricky little number :)

Lindz Warren Hopefully Terry Gosliner and Dave David Behrens will sort it out!

Gary Cobb In my opinion is looks more like Chroomodoris annae. The gills are not orange tipped, only the very lowest and inside part have white. C. dianae never has yellow on the anterior and posterior ends of the margin and as Erwin said only the gill tips are yellow. This animal has pits inside the black lines which looks more like C. annae, C. dianae has what appear to be pits all the way to the margin. In closing I would say this animal looks more like C. annae. :)

Gary Cobb I have looked closely at the central region of the mantle and am having second thoughts. This area looks more like frosty mottling with transparent and opaque white speck versus pits. Because this animal has what appears to be both traits I would call it Chromodoris cf. annae

Gary Cobb A high resolution photo of the central region would tell for sure. Thank you for listening.

Terry Gosliner Looks like a Chromodoris michaeli to me, but it certainly has aspects of C. diannae. It could possibly be a weird hybrid as members of this group have been observed mating with different species.

Gary Cobb I agree with Terry this could be a hybrid.

Franca Wermuth-Vezzoli Thanks so much, Gary Cobb and Terry Gosliner, I'm really excited about this discussion and the outcome of it. It is so good to have this site, thanks a lot!

Blogie Robillo Pls help ID these two dorids? For the life of me, I still find it difficult to differentiate among Chromodoris magnifica, C. annae, C. elisabethina... Both nudis were spotted at a depth of 5m, and each measured roughly 3cm long.

Blogie Robillo No takers?

Deb Aston I would guess either Chromodoris michaeli or Chromodoris colemani

Roy Arthur David Lontoh I think the one on the left is Chromodoris mihaeli and the one on the right is Chromodoris hamiltoni?

Blogie Robillo Thanks for your input, guys, but I think C. michaeli is out of the question. Accdg to existing descriptions, C. michaeli's dorsum should have a "fine speckling of white' on a translucent bluish or brownish ground color. Neither of the two above has such.

Blogie Robillo I'm still confused what the one on the left could be, but the one on the right just might be Chromodoris hamiltoni....... Anyone?

Blogie Robillo OK, based on the message in this link, the one on the right could very well be C. hamiltoni: http://www.seaslugforum.net/message/22337

Blogie Robillo Hey Gary Cobb, any thoughts? :)

Gary Cobb Where we're these found? Chromodoris hamiltoni is a west Indo pacific species and other species may aquire pigmentation.

Blogie Robillo Gary Cobb - Both were found off the eastern coast of Samal Island, south of the Philippines.

Franca Wermuth-Vezzoli I had the same problem: http://www.seaslugforum.net/find/23081 and http://www.seaslugforum.net/find/20173. I file my nudi as a Chromodoris magnifica.

Gary Cobb Yes these Nudibranchs can be quite a problem. I would say the two photos above are Chromodoris magnifica (Quoy & Gaimard, 1832). This species can have brown smudges. C. annae has "pits" in the blue region of the mantle. C. hamiltoni is from the Western Indian Ocean i.e.. Africa.

Roxanne Fea I find identifying these types of nudibranches can be maddening...

Blogie Robillo yeah maddening, but like a drug :D

Gary Cobb Fairly simple if you know what morphology separates the species. Also don't forget that DNA will give a positive result, we can only hazard a guess based on "time in the saddle"!

Blogie Robillo I'll settle for "time in the saddle" ;)

Gary Cobb Good one!

Blogie Robillo Chromodoris dianae, 2cm, 68 20m depth, 11 Feb 2012, Coral Gardens dive site, Talikud Island, Samal, Philippines.

Blogie Robillo Sorry, I meant to post "68ft / 20m depth" :)

Mark Farrer stunning

Blogie Robillo Sorry, this apparently isn't C. dianae. It's Chromodoris michaeli.

Blogie Robillo Which one is this, Chromodoris dianae or Chromodoris michaeli? Photo taken at a depth of 21m. Length: 2.5cm.

Roy Arthur David Lontoh Chromodoris sp.

Blogie Robillo Really? Undescribed? :(

Gary Cobb Where was is animal found??!

Gary Cobb This is Chromodoris michaeli Gosliner & Behrens, 1998

Blogie Robillo Gary, what makes this C. michaeli? I can't seem to differentiate it from C. dianae with any authority...

Blogie Robillo Thanks for the ID, Gary Cobb! I spotted it at a depth of 21m, size about 2.5cm. It was last 11 February 2012, at a dive site called Coral Gardens, off the eastern coast of Talikud Island, Davao Gulf, Philippines.