Tubbreva exaltata
Holotype of Tubbreva exaltata exaltata from Auckland War Memorial Museum
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Family: Cingulopsidae
Genus: Tubbreva
Species:
T. exaltata
Binomial name
Tubbreva exaltata
(Powell, 1933)
Synonyms[1][2]
  • Notosetia exaltata Powell, 1933
  • Rufodardanula (Tubbreva) exaltata Ponder, 1965

Tubbreva exaltata is a species of marine gastropod mollusc in the family Anabathridae.[1] First described by Badwn Powell in 1933 as Notosetia exaltata, it is endemic to the waters of New Zealand. There are two subspecies, Tubbreva exaltata exaltata and Tubbreva exaltata sorenseni.

Description

Powell described the species as follows:

Shell minute, elongate-conic, moderately solid. Coloured uniformly light-brown. Whorls 5, including low dome-shaped protoconch. Protoconch and the whole of the post-nuclear whorls smooth and polished. Spire elevated, conic, 1½ times height of aperture. Suture false-margined, due to the base of the previous whorl showing through, giving the appearance of a narrow subsutural band of darker brown. Aperture ovate-pyriform, comparatively small. Peristome discontinuous but united by an almost straight and upright columella, and a thin parietal callus, oblique in profile and inclined forwards above. There is a small crescentic umbilical chink. Outer lip thin and sharp, slightly adpressed at the suture.[3]

The species measures 1.55mm, by 0.9mm.[4]

Subspecies

In 1965, Winston Ponder reclassified the species Notosetia sorenseni (originally described by himself in 1955) as a subspecies of Tubbreva exaltata, due to the two groups' similar appearances. the new subspecies, now known by the name Tubbreva exaltata sorenseni, differs by having a shorter spire and relatively more inflated body whorl.[2]

Distribution

The species is endemic to New Zealand.[1] The holotype was collected by either A.W.B. Powell or C.A. Fleming in February 1933, offshore from Owenga Beach in the Chatham Islands.[5] It is found in the south of the South Island, the Chatham Islands and the New Zealand Subantarctic Islands,[4] with specimens reported as far north as Taranaki on the west coast of the North Island.[6][7]

References

  1. 1 2 3 Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O, eds. (2022). "Pisinna hipkinsi Powell, 1933". MolluscaBase. World Register of Marine Species. Retrieved 22 November 2022.
  2. 1 2 Ponder, W. F. (1965). "A Revision of the New Zealand Recent Species Previously Known as Notosetia Iredale, 1915 (Rissoidae, Gastropoda)". Records of the Auckland Institute and Museum. 6: 101–130. ISSN 0067-0464. JSTOR 42906116. Wikidata Q58676804.
  3. ↑ Powell, A. W. B. (1933). "The Marine Mollusca of the Chatham Islands". Records of the Auckland Institute and Museum. 1: 181–208. ISSN 0067-0464. JSTOR 42905950. Wikidata Q58676558.
  4. 1 2 "Tubbreva exaltata". New Zealand Mollusca. Retrieved 22 November 2022.
  5. ↑ Blom, Wilma (2022). "Fossil and Recent molluscan types in the Auckland War Memorial Museum. Part 4: Gastropoda (Caenogastropoda – Neocyclotidae to Epitoniidae). [Cyclophoroidea, Cerithioidea, Littorinimorpha]". Records of the Auckland Museum. 56 (55): 39–62. doi:10.32912/ram.2020.55.7. ISSN 2422-8567. S2CID 229670783. Retrieved 20 October 2022.
  6. ↑ "marine snail, Tubbreva exaltata (Powell, 1933)". Te Papa. Retrieved 22 November 2022.
  7. ↑ "marine snail, Tubbreva exaltata (Powell, 1933)". Te Papa. Retrieved 22 November 2022.
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