Gary Cobb Here is Flabellina bicolor we find here on the Sunshine Coast Mooloolaba Queensland Australia. 30 mm
Erwin Koehler I think this one look like the picture of Flabellina macassarana in IPN,
Gary Cobb Erwin what makes you think this is Flabellina macassarana??
Erwin Koehler I do NOT think this is F. macassarana, I hit the Enter button too early
and the EDIT did not work, the full text I wanted to write:
I think this one looks like the picture of Flabellina macassarana in IPN at page 352, though none of them fits the description, e.g. the picture
in IPN is of something else, not of F. macassarana, look here:
http://www.philippine-sea-slugs.com/Nudibranchia/Dexiarchia/Flabellina_macassarana_03.htm
Gary Cobb Thank you Erwin. It happens to everyone. I am reexamining the Flabellina bicolor photos we have and want to try to see without any doubt the real differences between the 2 species. You see many photos of both species with paddle shaped oral tentacles. You see both species with defused orange rings and sharp rings at the ends of the cerata. You see both species with opaque white bodies and transparent bodies. Could they be the same species??? Will get back.
Gary Cobb Here is Flabellina bicolor we find here on the Sunshine Coast Mooloolaba Queensland Australia. 30 mm
Erwin Koehler I think this one look like the picture of Flabellina macassarana in IPN,
Gary Cobb Erwin what makes you think this is Flabellina macassarana??
Erwin Koehler I do NOT think this is F. macassarana, I hit the Enter button too early
and the EDIT did not work, the full text I wanted to write:
I think this one looks like the picture of Flabellina macassarana in IPN at page 352, though none of them fits the description, e.g. the picture
in IPN is of something else, not of F. macassarana, look here:
http://www.philippine-sea-slugs.com/Nudibranchia/Dexiarchia/Flabellina_macassarana_03.htm
Gary Cobb Thank you Erwin. It happens to everyone. I am reexamining the Flabellina bicolor photos we have and want to try to see without any doubt the real differences between the 2 species. You see many photos of both species with paddle shaped oral tentacles. You see both species with defused orange rings and sharp rings at the ends of the cerata. You see both species with opaque white bodies and transparent bodies. Could they be the same species??? Will get back.
Blogie Robillo Spotted this in about 11m of water at Dayang Beach, Talikud Island. Can anyone confirm that this nudibranch is Flabellina bicolor? Length abt 0.5cm.
Kati Burg Looks like (especially when you read this discription): http://www.seaslugforum.net/find/flabbico
Blogie Robillo Kathrin - F. bicolor has rhinophores with lamellae, right? This one doesn't seem to have that characteristic. Someone on Nudibase suggested F. riwo. Whatcha think?
Kati Burg Maybe you just can't see it on the photo. I thought one of the main characteristics are the "golden bands" which this one definately has "Flabellina bicolor is characterised by its white body and the subterminal golden band on each cerata".
Kati Burg To me F. riwo looks very different. Also if you check the discription: http://www.seaslugforum.net/find/flabriwo
Blogie Robillo Yup, I've read the description on SSF, but I was thinking this might be a juvenile?
Blogie Robillo Can anyone confirm if this is Flabellina bicolor? The coloration seems right for F. bicolor, but the ceratal tips don't appear pointed...
Length 0.5cm; depth 10m @ Dayang Beach, Talikud Island, Philippines.
Ashley Missen Has the Body got whiteish speckles on it - sort of looks like it does - so I would be more inclined to say Flabellina riwo
Blogie Robillo Hi Ashley. There's a hint of speckling on its dorsum, but I can't be certain. Might this be a juvenile F. riwo? Or a juvenile F. bilas?
Blogie Robillo Ok, I've done some more reading on F. bicolor, F. bilas & F. riwo. I think we can rule out F. bicolor because that species has rhinophores with lamellae. This one apparently doesn't have that characteristic. The body of this nudibranch doesn't have the white patches present in F. bilas, so I think you're right, Ashley. But I guess this would be a juvenile specimen, no?
Blogie RobilloFlabellina bicolor (pls confirm?)
This nudi was really tiny, only about 1cm in length. Spotted it crawling at a depth of 18m in Dayang Beach, Talikud Island, Philippines.
Blogie Robillo Spotted this in about 11m of water at Dayang Beach, Talikud Island. Can anyone confirm that this nudibranch is Flabellina bicolor? Length abt 0.5cm.
Kati Burg Looks like (especially when you read this discription): http://www.seaslugforum.net/find/flabbico
Blogie Robillo Kathrin - F. bicolor has rhinophores with lamellae, right? This one doesn't seem to have that characteristic. Someone on Nudibase suggested F. riwo. Whatcha think?
Kati Burg Maybe you just can't see it on the photo. I thought one of the main characteristics are the "golden bands" which this one definately has "Flabellina bicolor is characterised by its white body and the subterminal golden band on each cerata".
Kati Burg To me F. riwo looks very different. Also if you check the discription: http://www.seaslugforum.net/find/flabriwo
Blogie Robillo Yup, I've read the description on SSF, but I was thinking this might be a juvenile?
Blogie Robillo OK, I'd hazard a guess that this one's Flabellina delicata. Its rhinophores have papillae (although that's not very clear in this photo), it has purplish oral tentacles and "tail", and the cerata are tipped with purple rings. Could anyone confirm the ID?
Gary Cobb This is Flabellina bicolor (Kelaart, 1858)
Blogie Robillo It looks awfully like F. delicata... but I trust you, Gary!
Gary Cobb Have a look at the bands at the end of the cerata and you'll see the difference. F. bicolour has a single red band at the tip. The body colour can vary, but typically white.
Blogie Robillo I see. Thanks for the info!
Blogie Robillo Gary Cobb - It says on Nudipixel and SSF that the oral tentacles of F. bicolor are flattened to form "paddles". This one has pointy oral tentacles. The cerata of F. bicolor seem to be pointed in all the photos I've seen. This one, on the other hand, has fat cerata, much like those of F. bilas'. Lastly, this one has rhinophores with papillae. Does F. bicolor have the same physical feature?
Gary Cobb The flat paddled concept is not true. We find this species without the paddled oral tentacles. I'll post a photo of the one we find. The main thing I would look for is the white body and single red or orange ring near the tip of the create. Another thing is the rhinophores have a red tip.
Gary Cobb Blogie if you see enough differences between the photo I posted and your photo please feel free to call your Flabellina cf. bicolor
Blogie Robillo Gary - There's a distinct difference between this one and the one you just posted: their rhinophores are very different. Yours seems to not have papillae on them, while mine does. Would it be ok if I called mine Flabellina cf. delicata?
Erwin Koehler In the highly variable Flabellina rubrolineata are the red longitudinal lines in some specimen totally absent, something to check...
Blogie Robillo Erwin - I thought it was the red longitudinal line that identified F. rubrolineata as that particular species?? Really confusing...
Gary CobbFlabellina rubrolineata also comes without red lines!
Gary Cobb Blogie you have seen photos of F. delicata why do you think your photo is that?
Jeff Rosenfeld Seems like in F. delicata, the bands on the cerata are orange and the tips are purple (the opposite of yours). My thought was what Gosliner et al. call Flabellina sp. 1 in "Indo-Pacific Nudibranch and Sea Slugs."
Blogie Robillo Gary Cobb - Seriously, I think I might need glasses already. So now we have F. rubrolineata in the mix too... So is it that or is it still F. bicolor (or F. cf. bicolor)?
Blogie Robillo Or do we follow Jeff's call? Flabellina sp.?
Erwin Koehler there is a brandnew site on F. delicata:
http://www.philippine-sea-slugs.com/Nudibranchia/Dexiarchia/Flabellina_delicata.htm
Blogie Robillo Thanks Erwin!
Gary Cobb I don't think your photo is neither Flabellina delicata or F. rubrolineata. We are only hazarding a guess here. I think the closest match is F. bicolor. But since is does not match perfectly I would call it Flabellina cf. bicolor.
Blogie Robillo Spotted this tiny nudibranch yesterday in about 15m of water -- sorry for the not-so-clear photo. It appears to be Flabellina delicata but I can't be sure. Its body is somewhat orange, and its oral tentacles are bluish purple, as well as its foot. The cerata are the color of its body but tipped with purple rings. It measured about half a centimeter long.
Gary Cobb This is Flabellina bicolor (Kelaart, 1858)
