Facelina dubia

Jørn Ari © PE Rasmussen

Lucas CerCur This is the "neverending story".

Lucas CerCur This is a Facelina, but.... a varity of something or and undescribed species?

Bernard Picton This is the same species that you found recently I think. In my opinion it does not match any named species from our area. Lucas is just saying the same thing!!

Lucas CerCur are there more records of individuals similar?

Lucas CerCur What Facelina spp are recoreded in the same area?

Lucas CerCur Anatomical an molecular study are needed for comparison with known species.

Lucas CerCur Bernard, for this reason, my idea for a proposal of sibbling species, but extended for other phyla, not only for opisthobranchs.

Bernard Picton It has some characters of Facelina bostoniensis, red oesophagus, shape of the white marks on the cerata. But the rhinophores look smooth and the pigment on the oral tentacles is more like Facelina dubia.

Lucas CerCur Thus, more research groups, more countries and more atraction for burocrats in Brussels would surround the proposal.

Bernard Picton Remember too that we use the name Facelina bostoniensis for Facelina curta and Facelina drummondi...

Lucas CerCur Yes... And one more issue: what is Facelina?

Lucas CerCur Facelinids are not monophyletic, nor Facelina genus.

Jørn Ari I would call it Facelina bostoniensis, but then again. The rhinophores are smooth. I am confused.

Jørn Ari Lucas CerCur . Only Facelina bostoniensis is registered in this area of the country

Jørn Ari More of the same kind here: http://www.nudibranchia.dk/foto-log.html

Lucas CerCur It seems different of your preview facelinid,but these animals are crazy. I put my hand on fire for an opisthobranch NEVER.

Lucas CerCur You can let you animal as Facelina cf bostoniensis

Jørn Ari cf ?

Cynthia D. Trowbridge basically "looks like"

Lucas CerCur Sorry, I though you knew the meaning

Klas Malmberg Aquatilis Den typiska F.bostoniensis utan lameller på rhinoforerna är en nudis som vi måste reda ut ordentligt! Heja Jörn - det går ju jättebra med ditt nudiesamlande!

Jørn Ari Hej Klas Malmberg Aquatilis . Ja, det gå fremad. Nu kan alle der dykker og fotograferer i Danmark byde ind med observationer.

Klas Malmberg Aquatilis Det känns som om jag vill komma och dyka i danmark när jag ser alla bilderna! Har tyvärr bara lite svårt att hinna just nu med tanke på resa till Filippinerna, Bahamas mm, men vill gärna hjälpa till med observationer.

Jørn Ari Du er altid velkommen

Jørn Ari Cynthia D. Trowbridge . CF i latin and short for?

Erling Svensen I have a feeling for this one - Eubranchus pallidus - but I am not sure. Could it be E. farrani instead?

Klas Malmberg Aquatilis Looks like a F. bostoniensis but its rhinofores are not annulate so it looks like a F. dubia lacking white pigment patches - very interesting, shall be nice to see what it is!

Christian Skauge Hmm, are you sure this is Eubranchus at all? They usually have more bolbous tentacles. And this would be a very strange color variation! E. pallidus should anyway have pigmentation (often reddish-brown) on the head and back.

Christian Skauge What Klas said :-) F. bostoniensis seems most likely.

Erling Svensen Yes, I agree. I had my first dive this year after having a cold and still not feeling good. My brain do not work properly at all. Sorry. Still a strange colour variation...

Christian Skauge :like:

Erling Svensen ..... and thanks.....

Klas Malmberg Aquatilis Yes a very strange color, I´ve seen this variation but with annulate rhinofores so I think this is a interesting form, mayby someone else has another suggestion...

Brendan Oonk On 23 october 2012 (album) I posted some pics of color variation of F.bostoniensis. One of these looks a lot like your one, BUT has also got the rings on the rhinophores.

Peter H van Bragt Neither E. pallidus or F. bostoniensis, I would say! But I wonder what it is. It doesn' t seem to be one we get on the Dutch coast. What was it length?

Bernard Picton I think Klas could be right with Facelina dubia. If so that would be an incredible range extension, previously no farther north than Lough Hyne in SW Ireland.

Erling Svensen Thanks Bernard and all of you. The length was aprox. 2 cm. Just below my house in Egersund harbour at 8 meters deept. Last night.....

Bernard Picton Usually if there is one, there will be a population; one can't breed on its own. (Actually some nudibranchs may be able to do this, as they have both male and female reproductive systems, but we think they don't normally self-fertilise as that's the route to extinction.) So next time you find one put it in a small pot of ethanol and we'll check the radula and perhaps also the DNA. Nudibranchs are moving north quite fast with climate change in recent years.

Erling Svensen Thanks Bernard. We will meet in March - hope to have one before that.

Christian Skauge Wow, incredible!

João Pedro Silva I wonder how long it'll take for Felimare villafranca to reach those latitudes? :)

Erling Svensen By plane only some houres, by "ballast" water, one day, so?

João Pedro Silva As it has direct development, spreading through ballast is less likely. It's the most common nudibranch here in Portugal.

Bjørnar Nygård Found this little beauty during a dive i had yesterday in Bergen, Norway. It's about 5-10mm big and was found at about 13m depth. Is it a Cuthona pustulata ?

Klas Malmberg Aquatilis I think it has to long oral tentakles to be a Cuthona - what do you think of some kind of Facelina sp?

Bjørnar Nygård Facelina sp. actually sounds more right

Rudolf Svensen Cumanotus beaumont?

Christian Skauge It could resemble Cumanotus, yes... but still... a little strange?

Bjørnar Nygård it might resemble, but the cerats is quite different on this one and the mouth area is also different

Godfried van Moorsel Facelina dubia?

Christian Skauge I still think C. pustulata :-)