Trinchesiidae is a family of sea slugs, aeolid nudibranchs, marine gastropod molluscs in the superfamily Fionoidea.Bouchet, P.; Picton, B.; Gofas, S. (2017). Trinchesiidae F. Nordsieck, 1972. In: MolluscaBase (2017). Accessed through: World Register of Marine Species on 2017-11-01
Taxonomic history This family was reinstated as a result of a molecular phylogenetics study.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.
In yet another study, Korshunova et al., 2025 conducted a mass reassessment of Aeolidacea taxa and proposed to reverse previous motions that "lumped" taxa together indiscriminately, in addition to reinstating many genera that those previous had decided belonged in synonymy.Korshunova T.; Fletcher K.; Martynov A. (2025). 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, While The World Register of Marine Species (WoRMS) has cited Korshunova et al., 2025 across other taxonomic adjustments, in regards to the precise allocation of species and genera within Trinchesiidae, who is possibly the most controversed Aeolidean family with papers being published nearly every year from opposing camps, there has yet to be adjustments made.MolluscaBase eds. (2026). MolluscaBase. Trinchesiidae F. Nordsieck, 1972. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=151283 on 2026-03-05
Genera According to Korshunova et al. (2025), genera within the family Trinchesiidae include: Catriona Winckworth, 1941 Diaphoreolis Iredale & O'Donoghue, 1923 Narraeolida Burn, 1961 Njurja Er. Marcus & Ev. Marcus, 1960 Phestilla Bergh, 1874 Pinufius Er. Marcus & Ev. Marcus, 1960 Rubramoena* Cella, Carmona, Ekimova, Chichvarkhin, Schepetov & Gosliner, 2016 Selva Edmunds, 1964 Subcuthona Baba, 1949 Tenellia A. Costa, 1866 Toorna Burn, 1964 Trinchesia Ihering, 1879 Zelentia Ihering, 1879
Korshunova et al. (2025) did not include Rubramoena within Trinchesiidae, yet did not offer an alternate designation, referencing it only once with the suggestion it might be made a juniour subjunctive synonym of Tenellia or Tergipes. It will remain listed here in accordance with WoRMS until later consensis.
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