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Tenellia sp. 05  Genus: A. Costa, 1866

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Tenellia sp. 05 has a translucent whitish body. The annulate rhinophores are translucent whitish, the annulae are whitish. The oral tentacles have a diffuse mid-central golden band. The cerata are translucent whitish with yellow pigment near the apices.
Pretty similar is
Tenellia sp. 14  Genus: A. Costa, 1866 which differs by smooth rhinophores, by the oral tentacles which have a more vividly coloured band, and by the cerata which have a swelling near the apices.
Tenellia sp. 05 was posted on 13 September 2016 at these website as Trinchesia sp. 42  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 changed on 23 December 2016 Trinchesia sp. 42  Genus: von Ihering, 1879 into Tenellia sp. 05  Genus: A. Costa, 1866.
References:
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. (2016), published 23 December 2016, Tenellia sp. 05  Genus: A. Costa, 1866
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Dexiarchia/Tenellia_sp_05.htm