Jorunna is a genus of sea slugs, dorid nudibranchs, shell-less marine gastropod molluscs in the family Discodorididae.
The name Jorunna comes from the latinization of the name of the character Jorunn from the Laxdæla saga.Bergh R. (1881). In: Semper, C. (ed.). Reisen im Archipel der Philippinen. Vol. 2. Malacologische Untersuchungen. IV. Theil, Heft 2 p. 113.
Biology Jorunna species are usually camouflaged to match the sponges they feed on, which in many cases belong to the family Chalinidae. It is likely that many undescribed species exist.Rudman, W.B., 1999 (January 6) Jorunna pantherina (Angas, 1864). [In] Sea Slug Forum. Australian Museum, Sydney.
Species There are more than 20 species in genus Jorunna.Camacho-Garcia, Y. E. and T. M. Gosliner. (2008). Journal of Molluscan Studies 74(2) 143.
Species brought into synonymy Jorunna johnstoni (Alder & Hancock, 1845): synonym of Jorunna tomentosa (Cuvier, 1804) - type species of the genus Jorunna Jorunna lemchei Ev. Marcus, 1976 : synonym of Gargamella lemchei (Ev. Marcus, 1976) Jorunna luisae Ev. Marcus, 1976: synonym of Jorunna evansi (Eliot, 1906) Jorunna malcolmi Ev. Marcus, 1976: synonym of Jorunna labialis (Eliot, 1908) Jorunna marchadi Risbec, 1956: synonym of Asteronotus cespitosus van Hasselt, 1824 Jorunna zania Ev. Marcus, 1976: synonym of Jorunna funebris (Kelaart, 1859)
References
Valdés Á. (2002). A phylogenetic analysis and systematic revision of the cryptobranch dorids (Mollusca, Nudibranchia, Anthobranchia). Zoological Journal of the Linnean Society. 136: 535-636