Tenellia sp. 29  Genus: A. Costa, 1866

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Tenellia sp. 29 has a whitish body with a bluish tinge. The smooth rhinophores are basally whitish with a broad orange median band, the outer third is white. The oral tentacles are white. The cerata are cream-white with one single red spot on each ceras, and diffuse pale bluish apices.
It looks pretty similar to Cuthona sp. 12 at page 364 in IPN
which differs by the blue and yellowish patch just behind the rhinophores.
Very similar are:
Tenellia sp. 13 which has the same colour and cerata, it differs by the translucent rhinophores with opaque white spots,
Trinchesia sp. 02 which differs by a brownish spot on each ceras, and by orange oral tentacles.
This species was posted on 10 July 2012 at these websites as Trinchesia sp. 29  Genus: von Ihering, 1879.
Cella et al. (2016) restricted the genus Cuthona  Alder & Hancock, 1855 to the type species, C. nana (Alder & Hancock, 1842) just like Miller (2004) did, and synonymised the genera
- Catriona  Winckworth, 1941,
- Phestilla  Bergh, 1874,
- Cuthona  Alder & Hancock, 1855 (partim), and
- Trinchesia  Ihering, 1879
with Tenellia  A. Costa, 1866 in the Family Fionidae  J.E. Gray, 1857.
I moved on 6 January 2017 Trinchesia sp. 29  Genus: von Ihering, 1879 to the Genus Tenellia  A. Costa, 1866.
Gosliner, Terrence M., David W. Behrens & Ángel Valdés. 2008. Indo-Pacific Nudibranchs and Sea Slugs.
Sea Challengers Natural History Books. Gig Harbor, Washington. 426pp.
Miller, M.C. 2004. An appraisal of the identity of the New Zealand species of the aeolid nudibranch family Tergipedidae (Gastropoda: Opisthobranchia). Journal of Natural History 38: 1183-1192.
Kristen Cella, Leila Carmona, Irina Ekimova, Anton Chichvarkhin, Dimitry Schepetov & Terrence M. Gosliner (2016)
A Radical Solution: The Phylogeny of the Nudibranch Family Fionidae.
PLoS ONE 11(12): e0167800. doi:10.137 1/journal .pone.0167800
The above publication is completely online, open access, CC-license
How to cite:
Köhler, E. (2017), published 6 January 2017, Tenellia sp. 29  Genus: A. Costa, 1866
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Dexiarchia/Tenellia_sp_29.htm