Thorunna

Thorunna is a genus of sea slugs, dorid nudibranchs, shell-less marine gastropod mollusks in the family Chromodorididae.[3][4][5]

Thorunna
A live individual of Thorunna furtiva, head end towards the right and turned towards the camera
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Order: Nudibranchia
Suborder: Doridina
Superfamily: Doridoidea
Family: Chromodorididae
Genus: Thorunna
Bergh, 1878[1]
Synonyms[2]
  • Babaina Odhner in Franc, 1968
  • Digidentis Rudman, 1984

Description

The genus Thorunna contains chromodorid nudibranchs with a distinctive radula, which is very small and has 17-25 teeth in a half-row. The lateral teeth are long slender shafts with bluntly bifid tips. Species in this genus rarely exceed 20 mm (0.79 in) and wriggle or vibrate their gills rhythmically. Anatomically the buccal bulb is very small relative to most chromodorids and the oral tube very long.[6]

Species

Species in the genus Thorunna include:[2]

Species brought into synonymy
  • Thorunna decussata (Risbec, 1928) : synonym of Noumea decussata Risbec, 1928: synonym of Verconia decussata (Risbec, 1928)
  • Thorunna lapislazuli Bertsch & Ferreira, 1974: synonym of Felimare lapislazuli (Bertsch & Ferreira, 1974)
  • Thorunna scottjohnsoni (Bertsch & Gosliner, 1989): synonym of Ardeadoris scottjohnsoni Bertsch & Gosliner, 1989
  • Thorunna speciosus Rudman, 1990: synonym of Thorunna speciosa Rudman, 1990
  • Thorunna tura (Marcus & Marcus, 1967): synonym of Mexichromis tura (Marcus & Marcus, 1967)
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References
  1. Bergh, L.S.R. (1878). Malacologische Untersuchungen. In: C. Semper (ed.) Reisen im Archipel der Philippinen, Theil 2, Wissenschaftliche Resultate, Band 2, Theil 2, Heft 14: 603-645, I-L, pls 66-68.
  2. MolluscaBase (2018). Thorunna Bergh, 1878. Accessed on 2018-12-23.
  3. Rudman W.B. (1984) The Chromodorididae (Opisthobranchia: Mollusca) of the Indo-West Pacific: a review of the genera. Zoological Journal of the Linnean Society 81 (2/3): 115-273. page(s): 216
  4. Johnson R.F. & Gosliner T.M. (2012) Traditional taxonomic groupings mask evolutionary history: A molecular phylogeny and new classification of the chromodorid nudibranchs. PLoS ONE 7(4): e33479.
  5. Rudman W. B. (1990). "The Chromodorididae (Opisthobranchia: Mollusca) of the Indo-West Pacific: further species of Glossodoris, Thorunna and the Chromodoris aureomarginata colour group". Zoological Journal of the Linnean Society 100(3): 263-326. doi:10.1111/j.1096-3642.1990.tb01864.x.
  6. Rudman W.B. (1984) The Chromodorididae (Opisthobranchia: Mollusca) of the Indo-West Pacific: a review of the genera. Zoological Journal of the Linnean Society 81(2/3): 115-273. page(s): 163
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