Pupatonia

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Pupatonia
Pupatonia gracilispira (Powell, 1933) (AM MA70276).jpg
Pupatonia gracilispira
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Family: Eatoniellidae
Genus: Pupatonia
Ponder, 1965
Type species
Estea minutula
Powell, 1933

Pupatonia is a genus of minute sea snails, marine gastropod mollusks in the family Eatoniellidae, the eatoniellids. [1] [2] Members of the genus are found in southern mainland New Zealand, the New Zealand Subantarctic Islands, and southern South America.

Contents

Description

Neotype of Pupatonia pupinella Pupatonia pupinella MA I040568.jpg
Neotype of Pupatonia pupinella

In the original description, Ponder described Pupatonia as follows:

Shell pupate, minute, white, solid: aperture ovate, peristome thickened, outer lip bent downwards at suture, sculpture of fine, close, spiral lines, Imperforate. Though superficially similar to Microedryas Laseron, Pupatonia differs in having a thicker shell, a different aperture, and less definite sculpture. Whereas Microdryas is related to the Estea-Scrobs group, Pupatonia is probably an eatoniellid. Animal, radula and operculum unknown. [3]

Members of the genus range from minute to small in size, and have white, solid shells which are either smooth or have fine spiral lines. Members of Pupatonia typically have an outer shell lip that bends downwards at the shell's suture. [4]

Taxonomy

The genus and species was first described by Winston Ponder in 1965, who named Estea minutula (now Pupatonia minutula ) as the type species. [3] The holotype of P. gracilispira is held by the Auckland War Memorial Museum, [5] P. minutula by the Canterbury Museum, [5] P. atoma by the National Institute of Water and Atmospheric Research of New Zealand, [5] and P. magellanica by the Natural History Museum of Los Angeles County. [6] The neotype of P. pupinella is held by Te Papa. [7] Originally thought to only occur around New Zealand, a South American species was identified in 1994. [6]

Distribution

Most members of Pupatonia are found in southern mainland New Zealand and the New Zealand Subantarctic Islands. P. magellanica is found off the coast of southern South America. [8] [9] [6]

Species

Species within the genus Pupatonia include: [1]

References

  1. 1 2 Pupatonia Ponder, 1965 . Retrieved through: World Register of Marine Species  on 30 October 2025.
  2. ↑ 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.
  3. 1 2 Ponder, W. F. (1965). "The Family Eatoniellidae in New Zealand". Records of the Auckland Institute and Museum . 6: 47–99. ISSN   0067-0464. JSTOR   42906115. Wikidata   Q58676802.
  4. ↑ Powell, A.W.B. (1979). New Zealand Mollusca: Marine, Land and Freshwater Shells. Auckland: Collins. p. 94. ISBN   0002169061.
  5. 1 2 3 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.
  6. 1 2 3 Ponder, W. F.; Worsfold, T. M. (1994). "A review of the rissoiform gastropods of southwestern South America (Mollusca, Gastropoda)". Contributions in Science. 445: 1–63. doi:10.5962/P.208081. ISSN   0459-8113. Wikidata   Q108118435.
  7. ↑ "marine snail, Pupatonia pupinella (Finlay, 1927)". Te Papa . Retrieved 30 October 2025.
  8. ↑ "NZ Mollusca - Pupatonia". New Zealand Mollusca. Retrieved 30 October 2025.
  9. ↑ "Pupatonia Ponder, 1965". Global Biodiversity Information Facility . Retrieved 30 October 2025.
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