Hauturua vivens

Hauturua vivens
Holotype from Auckland War Memorial Museum
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Family:	Drilliidae
Genus:	Hauturua
Species:	H. vivens
Binomial name
Hauturua vivens (A. W. B. Powell, 1942)
Synonyms [1]
Splendrillia vivensA. W. B. Powell, 1942 Splendrillia (Hauturua) vivensA. W. B. Powell, 1942 Syntomodrillia (Hauturua) vivens(A. W. B. Powell, 1942) Syntomodrillia vivens(A. W. B. Powell, 1942)

Hauturua vivens is a species of sea snail, a marine gastropod mollusc in the family Drilliidae. ^[1] This species is endemic to New Zealand, typically found off the northeastern coast of the North Island.

Description

Reverse view of holotype

H. vivens has a moderately-sized shell and a tall spire which is more than twice the height of the aperture and the canal, and a narrow body whorl with a slight basal angulation that suddenly constricts. It has eight whorls, and a smooth globular protoconch of two whorls. The post-nuclear whorls are angled just below the middle. There are ten axials on the penultimate, and the shell surface is smooth, except for some spiral threads on the neck. The axials are reduced to a peripheral row of approximately ten pointed tubercules per whorl. The shell is white in colour and shines. ^{[2] : 106  [3]} The species measures 10 mm (0.39 in) in height and 3.3 mm (0.13 in) in diameter. ^[4]

The species looks visually similar to Splendrillia debilis , but can be distinguished due to the lack of the subsutural spiral fold, by having a taller spire, and due to its angulate and excavated base. ^{[2] : 106}

Taxonomy

The species was first described by A.W.B. Powell in 1942, using the name Splendrillia (Hauturua) vivens. ^[2] By 1949, the species had begun to be referred to as Syntomodrillia (Hauturua) vivens. ^[5] By at least 2011, Hauturua was being treated as a genus, ^[6] making the species' accepted name Hauturua vivens. The holotype was collected from a depth of 37 m (121 ft) off the coast of Little Barrier Island in the Auckland Region, New Zealand at an unknown date prior to 1942, and is held by the Auckland War Memorial Museum. ^{[7] [4]}

Distribution

H. vivens is endemic to New Zealand, with shells found ntypically found north-east of the North Island from depths ranging between 37–146 m (121–479 ft), with other reports of shells being found on the Chatham Rise and off the coast of eastern Otago. ^{[3] [8]}

References

1. Hauturua vivens (A. W. B. Powell, 1942) . 17 November 2025. Retrieved through: World Register of Marine Species .
2. Powell, A. W. B. (1942). "The New Zealand recent and fossil Mollusca of the family Turridae, with general notes on Turrid nomenclature and systematics". Bulletin of the Auckland Institute and Museum . 2. ISSN   0067-0456. OCLC   1826451. Wikidata   Q115110377.
3. Powell, A. W. B. (1979). New Zealand Mollusca: Marine, Land, and Freshwater Shells. Auckland: Collins. p. 234. ISBN   0-00-216906-1. OCLC   6786656. Wikidata   Q115733448.
4. "Hauturua vivens". Collections Online. Auckland War Memorial Museum . Retrieved 17 November 2025.
5. Powell, A. W. B. (1949). "Biological Primary Types in the Auckland Museum: No. 3. Zoological (supplement)". Records of the Auckland Institute and Museum . 3 (6): 403–409. ISSN   0067-0464. JSTOR   42906034. Wikidata   Q58676696.
6. Bouchet, P.; Kantor, Yu. I.; Sysoev, A.; Puillandre, N. (26 July 2011). "A new operational classification of the Conoidea (Gastropoda)". Journal of Molluscan Studies . 77 (3): 273–308. doi:10.1093/MOLLUS/EYR017. ISSN   0260-1230. Wikidata   Q54552868.
7. Blom, Wilma M. (2025). "Annotated Catalogue of Fossil and Extant Molluscan Types in the Auckland War Memorial Museum". Bulletin of the Auckland Museum . 22. doi:10.32912/BULLETIN/22. ISSN   1176-3213. Wikidata   Q135397912.
8. "Hauturua vivens (Powell, 1942)". NZ Mollusca. Retrieved 17 November 2025.

Further reading

• Spencer, H. G.; Marshall, B. A.; Willan, R. C. (June 2009). "Checklist of New Zealand living Mollusca". New Zealand Inventory of Biodiversity. Volume 1. Kingdom Animalia Radiata, Lopotrochozoa, Deuteromstomia. 1: 196–219. Wikidata   Q125720861.