Powellisetia bilirata

Powellisetia bilirata
Holotype of Powellisetia bilirata from Auckland War Memorial Museum
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Littorinimorpha
Family:	Rissoidae
Genus:	Powellisetia
Species:	P. bilirata
Binomial name
Powellisetia bilirata (Ponder, 1965)

Powellisetia bilirata is a species of marine gastropod mollusc in the family Rissoidae. ^[1] First described by Winston Ponder in 1965, it is endemic to the waters of New Zealand.

Description

Powellisetia bilirata has a minute shell, with four whorls angled by a strongle^{[ check spelling ]} spiral chord. The species is pale yellow-brown in colour, with a reddish-brown protoconch. ^[2] The species measures 1.05mm, by 0.68mm. ^[3]

Distribution

The species is endemic to New Zealand. ^[1] The holotype was collected by K. Hipkins on 9 April 1955 from shell sand at McGregors Bay, Whangārei Heads, Northland Region. ^[4] It is found in to the north-east of the North Island, as far north as Manawatāwhi / Three Kings Islands, ^{[5] [3]} and has been found neat the volcanic Whakaari / White Island. ^[6]

References

1. 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). "Powellisetia bilirata Ponder, 1965". MolluscaBase. World Register of Marine Species . Retrieved 22 November 2022.
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. "Powellisetia bilirata". New Zealand Mollusca. Retrieved 22 November 2022.
4. Blom, Wilma M. (2020). "Fossil and Recent molluscan types in the Auckland War Memorial Museum. Part 4: Gastropoda (Caenogastropoda - Neocyclotidae to Epitoniidae). [Cyclophoroidea, Cerithioidea, Littorinimorpha]". Papahou: Records of the Auckland Museum . 55: 101–150. doi:10.32912/RAM.2020.55.7. ISSN   1174-9202. JSTOR   27008995. S2CID   229670783. Wikidata   Q106828489.
5. "marine snail, Powellisetia bilirata Ponder, 1965". Te Papa . Retrieved 23 November 2022.
6. "marine snail, Powellisetia bilirata Ponder, 1965". Te Papa . Retrieved 23 November 2022.