# Orienthella

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***Orienthella*** is a [genus](/source/Genus) of [sea slugs](/source/Sea_slug), specifically aeolid [nudibranchs](/source/Nudibranch), [marine](/source/Marine_(ocean)) [gastropod](/source/Gastropod) [molluscs](/source/Mollusc) in the [family](/source/Family_(taxonomy)) [Coryphellidae](/source/Coryphellidae).[2][3]

## Taxonomic Notes

In a recent study, Ekimova et al. (2026) synonymized [Coryphellidae](/source/Coryphellidae) with [Flabellinidae](/source/Flabellinidae), and synonymized all genera previously within Coryphellidae with *[Coryphella](/source/Coryphella)*[4]. It is very important to note that despite *Orienthella* being invalidated, *[Orienthella piunca](/source/Orienthella_piunca)* currently remains a fully accepted species[5], as it was the only member of Orienthella not included in the study.

## Species

Species within the genus *Orienthella* are as follows:[2][1]

- *[Orienthella cooperi](/source/Orienthella_cooperi)* (T. D. A. Cockerell, 1901)
- *[Orienthella fogata](/source/Orienthella_fogata)* (Millen & Hermosillo, 2007)
- *[Orienthella piunca](/source/Orienthella_piunca)* (Marcus, Er., 1961)
- *[Orienthella trilineata](/source/Orienthella_trilineata)* (O'Donoghue, 1921)
- *[Orienthella verta](/source/Orienthella_verta)* (Marcus, Ev. 1970)

## References

1. Korshunova, T.; Martynov, A.; Bakken, T.; Evertsen, J.; Fletcher, K.; Mudianta, W.; Saito, H.; Lundin, K.; Schrödl, M.; Picton, B. (2017). [Polyphyly of the traditional family Flabellinidae affects a major group of Nudibranchia: aeolidacean taxonomic reassessment with descriptions of several new families, genera, and species (Mollusca, Gastropoda).](https://doi.org/10.3897/zookeys.717.21885) ZooKeys. 717: 1-139.

1. Bouchet, P.; Picton, B. (2018). [*Orienthella* Korshunova, Martynov, Bakken, Evertsen, Fletcher, Mudianta, Saito, Lundin, Schrödl & Picton, 2017.](http://www.molluscabase.org/aphia.php?p=taxdetails&id=1049561) In: MolluscaBase (2026). Accessed on 2026-04-03.

1. Korshunova, Tatiana; Fletcher, Karin; Martynov, Alexander (2025-08-01). ["The endless forms are the most differentiated—how taxonomic pseudo-optimization masked natural diversity and evolution: the nudibranch case"](https://academic.oup.com/zoolinnean/article/doi/10.1093/zoolinnean/zlaf057/8237533). *Zoological Journal of the Linnean Society*. **204** (4). [doi:10.1093/zoolinnean/zlaf057](https://doi.org/10.1093/zoolinnean/zlaf057). [ISSN 0024-4082](https://www.worldcat.org/issn/0024-4082)

1. Ekimova I., Carmona L., Mikhlina AL., Grishina D., Stanovova M.V., Schepetov D.M., Hoover C., de Souza-Canal J., Kuznetsov K.O., Valdés A.; (2026). [Neither "lumpers" nor "splitters": A global revision of Flabellinidae s.l. nudibranchs (Gastropoda: Heterobranchia: Nudibranchia).](https://doi.org/10.1371/journal.pone.0347759) PLoS One 21(5): e0347759.

1. MolluscaBase eds. (2026). MolluscaBase. [*Orienthella piunca* (Marcus, Er., 1961).](https://www.marinespecies.org/aphia.php?p=taxdetails&id=1831162) Accessed through: World Register of Marine Species on 2026-05-29.

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Adapted from the Wikipedia article [Orienthella](https://en.wikipedia.org/wiki/Orienthella) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Orienthella?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.