Onchidina

Last updated • 1 min readFrom Wikipedia, The Free Encyclopedia

Onchidina
Onchidina australis 001.jpg
Onchidina australis
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Systellommatophora
Family: Onchidiidae
Genus: Onchidina
Semper, 1885
Synonyms [1]
  • OncidinaPlate, 1893
  • ParaoncidiumLabbé, 1934 unavailable name (no type species designated)
  • ParaoncidiumStarobogatov, 1976

Onchidina is a monotypic genus of air-breathing sea slugs, a shell-less marine pulmonate gastropod mollusks in the family Onchidiidae. [1]

Contents

Its sole member is the species Onchidina australis. [2] Uniquely within the Onchidiidae, O. australis lives above the tidal zone in a fully terrestrial habitat. [3]

Description

(Orginal description of Onchidina australis) The dorsal surface of the mollusk is strongly convex, while the ventral surface is flat. The dorsal mantle surface exhibits strong, irregular granulation, lacking any evidence of pseudobranchiae. Larger tubercles are distributed irregularly, spaced approximately 3-4 mm apart. The dorsal coloration is yellowish-gray, interspersed with darker speckles and dots. Two more or less indistinct bands of spots traverse the dorsal surface longitudinally, maintaining a consistent distance from each other and from the mantle margin. The larger tubercles on the dorsal surface are whitish. The ventral surfaces of the foot and head display a yellowish or reddish-gray coloration. The ventral surface of the mantle is blue-gray, bordered by a narrow yellowish band. [4]

Distribution

This species is endemic to Australia and occurs off Queensland.

References

  1. 1 2 Onchidina Semper, 1885 . Retrieved through: World Register of Marine Species  on 16 April 2010.
  2. Onchidina australis J.E. Gray in Semper, 1885 . Retrieved through: World Register of Marine Species  on 30 September 2010.
  3. Dayrat, Benoît; Goulding, Tricia C. (29 June 2017). "Systematics of the onchidiid slug Onchidina australis (Mollusca: Gastropoda: Pulmonata)". Archiv für Molluskenkunde: International Journal of Malacology. 146: 121–133. doi:10.1127/arch.moll/146/121-133.
  4. Semper, C. (1870–1885). Reisen im Archipel der Philippinen, Theil 2. Wissenschaftliche Resultate Band 3, Landmollusken. Wiesbaden: Kreidel. p. 287. Retrieved 12 February 2025.PD-icon.svg This article incorporates text from this source, which is in the public domain .