Atalodoris sparsa

Atalodoris sparsa
The nudibranch Atalodoris sparsa, 4 mm length, Gulen Dive Resort, Norway.
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Nudibranchia
Family: Onchidorididae
Genus: Atalodoris
Species:
A. sparsa
Binomial name
Atalodoris sparsa
(Alder & Hancock, 1846)
Synonyms[1]
  • Doris sparsa Alder & Hancock, 1846
  • Knoutsodonta sparsa (Alder & Hancock, 1846) superseded combination
  • Onchidoris sparsa (Alder & Hancock, 1846

Atalodoris sparsa is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusc in the family Onchidorididae.[1]

Description

(Original description) The body is ovate and notably depressed. The cloak is an obscure pale yellow with a few reddish-brown freckles and distant spiculose tubercles.

The dorsal tentacles are slightly conical with eight or nine broad, distant laminae and are blotched with olive-brown. The margins of their cavities have three or four tubercular points.

The gills are very small and colorless, consisting of nine pinnate plumes arranged in a horseshoe shape. The head has a large, semicircular veil. The foot is nearly as broad as the cloak, colorless, and is slightly bilobed at the front. [3]

Distribution

This species was described from Cullercoats, North Tyneside, England. It is currently known from the European coasts of the North Atlantic Ocean from Norway, Orkney and Sweden south to the northern coast of Spain.[4][5][6][7]

Diet

Atalodoris sparsa feeds on the bryozoan Cellepora pumicosa. It has also been reported to eat Porella concinna.[6]

See also

Knoutsodonta

References

  1. ^ a b MolluscaBase eds. (2025). MolluscaBase. Atalodoris sparsa (Alder & Hancock, 1846). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1565665 on 2025-09-10
  2. ^ Alder J. & Hancock A. (1845-1855). A monograph of the British nudibranchiate Mollusca: with figures of all the species. The Ray Society, London. Published in 8 parts:Part 4 Fam. 1 Plate 14 [1848].
  3. ^ Alder J. & Hancock A. (1846). Notices of some new and rare British species of naked Mollusca. Annals and Magazine of Natural History 18: 289-294, pl. 4. This article incorporates text from this source, which is in the public domain.
  4. ^ Picton, B.E. & Morrow, C.C. (2015). Onchidoris sparsa (Alder & Hancock, 1846). [In] Encyclopedia of Marine Life of Britain and Ireland. Accessed on 2016-01-15.
  5. ^ Rudman, W.B., 2009 (November 29) Onchidoris sparsa (Alder & Hancock, 1846). [In] Sea Slug Forum. Australian Museum, Sydney.
  6. ^ a b Thompson, T. E. and G. H. Brown (1984). Biology of Opisthobranch Molluscs Vol 2. 229 pp. 41 Pls. Ray Society, page 62.
  7. ^ Ortea, J. A. (1979). Onchidoris sparsa (Alder & Hancock, 1846) in Asturias, northern Spain. The Veliger 22(1): 45-48.