Idaliadoris tridactila

Idaliadoris tridactila
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Nudibranchia
Superfamily:	Onchidoridoidea
Family:	Onchidorididae
Genus:	Idaliadoris
Species:	I. tridactila
Binomial name
Idaliadoris tridactila (Ortea & Ballesteros, 1982) [1]
Synonyms
Atalodoris tridactila(Ortea & Ballesteros, 1982) superseded combination Knoutsodonta tridactila(Ortea & Ballesteros, 1982) superseded combination Onchidoris tridactilaOrtea & Ballesteros, 1982

Idaliadoris tridactila is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusc in the family Onchidorididae. ^[2]

Distribution

This species was described from Verdicio, Asturias, on the Atlantic Ocean coast of Spain, 43°35′N005°50′W / 43.583°N 5.833°W / 43.583; -5.833 . Additional specimens were found nearby at El Puntal, 43°30′N005°14′W / 43.500°N 5.233°W / 43.500; -5.233 .

Description

Idaliadoris tridactila is similar in appearance to Knoutsodonta depressa but is distinguished by having a rhinophore sheath with three elongate tubercles, similar to the ones which cover the dorsal surface of the mantle.

Diet

This species was found on the bryozoan Schizomavella linearis which is a food also reported for Knoutsodonta depressa.

References

1. Ortea, J. A., & V. Ballesteros (1982). Sobre algunos Onchidoris Blainville, 1816 (Mollusca, Opistobranchia, Doridacea) del litoral iberico. Investigación Pesquera 46: 239-254.
2. MolluscaBase eds. (2025). MolluscaBase. Idaliadoris tridactila (Ortea & Ballesteros, 1982). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1618241 on 2025-09-10

External links

• Furfaro, G., Trainito, E., Fantin, M., D'Elia, M., Madrenas, E. & Mariottini, P. (2022). "Mediterranean matters: Revision of the family Onchidorididae (Mollusca, Nudibranchia) with the description of a new genus and a new species". Diversity. 2023 (15).