Trinchesia

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Trinchesia
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Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Nudibranchia
Suborder: Aeolidacea
Family: Trinchesiidae
Genus: Trinchesia
H. von Ihering, 1879 [1]
Type species
Trinchesia caerulea(Montagu, 1804)
Synonyms [2]
  • NarraeolidaBurn, 1961
  • ToornaBurn, 1964

Trinchesia is a genus of sea slugs, aeolid nudibranchs, marine gastropod molluscs in the family Trinchesiidae. [3] [2] All species were transferred to Tenellia as a result of a DNA phylogeny study in 2016. [4] The genus was dismembered and broken into several smaller genera in 2017 with further DNA evidence and a re-interpretation of genus and family characteristics. [5]

In yet another study in 2025, Korshunova conducted a mass reassessment of Aeolidacea taxa and proposed to reverse previous motions that "lumped" taxa together indiscriminately. [6] The World Register of Marine Species (WoRMS) has yet to update their database in accordance to the findings of Korshunova (2025). [2] As always, Wikipedia defers to the standards set in place by WoRMS, and the lists below will not update unless WoRMS does.

Trinchesia species feed on hydroids.

Species

Species currently included in the genus Trinchesia: [2] [7]

Species formerly in the genus Trinchesia: [2]

Species names currently considered to be synonyms:

References

  1. ↑ Ihering H. von. (1879). Einiges neue uber Mollusken. Zoologischer Anzeiger. 2: 136-138
  2. 1 2 3 4 5 MolluscaBase eds. (2026). MolluscaBase. Tenellia A. Costa, 1866. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=138545 on 2026-03-04
  3. ↑ Brown, G.H. (1980). "The British species of the aeolidiacean family Tergipedidae (Gastropoda: Opisthobranchia) with a discussion of the genera." Zoological Journal of the Linnean Society 69: 225-255. - note: Supports treatment of Trinchesia as a synonym of Cuthona until definitive characters are established
  4. ↑ Cella, K; Carmona Barnosi, L.; Ekimova, I; Chichvarkhin, A; Schepetov, D; Gosliner, T. M. (2016). "A radical solution: The phylogeny of the nudibranch family Fionidae." PLoS ONE. 11(12): e0167800.
  5. ↑ Korshunova, T.; Martynov, A.; Picton, B. (2017). Ontogeny as an important part of integrative taxonomy in tergipedid aeolidaceans (Gastropoda: Nudibranchia) with a description of a new genus and species from the Barents Sea. Zootaxa. 4324(1): 1.
  6. ↑ Tatiana Korshunova, Karin Fletcher, Alexander Martynov, The endless forms are the most differentiated—how taxonomic pseudo-optimization masked natural diversity and evolution: the nudibranch case, Zoological Journal of the Linnean Society, Volume 204, Issue 4, August 2025, zlaf057, https://doi.org/10.1093/zoolinnean/zlaf057
  7. ↑ Korshunova, T., Picton, B., Furfaro, G. et al. Multilevel fine-scale diversity challenges the ‘cryptic species’ concept. Sci Rep 9, 6732 (2019). https://doi.org/10.1038/s41598-019-42297-5 on 2026-03-02
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