Jorunna Explained

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.^[1]

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.^[2]

Notes and References

1. Bergh R. (1881). In: Semper, C. (ed.). Reisen im Archipel der Philippinen. Vol. 2. Malacologische Untersuchungen. IV. Theil, Heft 2 p. 113.
2. Camacho-Garcia, Y. E. and T. M. Gosliner. (2008). Systematic revision of Jorunna Bergh, 1876 (Nudibranchia: Discodorididae) with a morphological phylogenetic analysis. Journal of Molluscan Studies 74(2) 143.
3. 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.^[2]

   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