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Taxonomy
Family:
TATEIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> Littorinimorpha (Order)
> Truncatelloidea (Superfamily)
> Tateidae (Family)
> Rakiurapyrgus (Genus)
> cresswelli (Species)
Synonymised Names:
=Potamopyrgus cresswelli Climo, 1974
Images: Rakiurapyrgus cresswelli (Climo, 1974)
Holotype of Potamopyrgus cresswelli Climo, 1974, collected 18 Jan 1970, Paterson Inlet, small seepage in coastal forest at head of streamlet entering W end of Golden Bay, NZ (M.032562). 2.3mm. © Museum of New Zealand Te Papa Tongarewa (CC-BY-NC-ND)
Collected 18 Jan 1970, Paterson Inlet, small seepage in coastal forest at head of streamlet entering W end of Golden Bay, NZ. 2.3mm. Reproduced courtesy of Dave Roscoe
Collected 18 Jan 1970, Paterson Inlet, small seepage in coastal forest at head of streamlet entering W end of Golden Bay, NZ. 2.3mm. Reproduced courtesy of Dave Roscoe
Taxonomy
Family:
TATEIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> Littorinimorpha (Order)
> Truncatelloidea (Superfamily)
> Tateidae (Family)
> Rakiurapyrgus (Genus)
> cresswelli (Species)
Synonymised Names:
=Potamopyrgus cresswelli Climo, 1974
Details: Rakiurapyrgus cresswelli (Climo, 1974)
Size/Grows to:
Height 2.5mm
Distribution:
Stewart Island
Geographical Range:
Fw.E.
Notes:
Freshwater, Endemic, In springs and seepage
Distribution Map
 
References and Publications
  • Haase, M. 2008 The radiation of hydrobiid gastropods in New Zealand: a revision including the description of new species based on morphology and mtDNA sequence information, Systematics and Biodiversity, 6(1) (p.151)
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.122)
  • Climo, F.M. 1977 Notes on the New Zealand hydrobiid fauna (Mollusca: Gastropoda: Hydrobiidae), Journal of the Royal Society of New Zealand, 7(1) (p.73)
  • Climo, F.M. 1974 Description and affinities of the subterranean molluscan fauna of New Zealand, New Zealand Journal of Zoology, 1(3) (p.260) Original Description

Key to Geographical Ranges
NZ Map showing Geographical Ranges
The symbols K.A.C.F.M.An. are used to indicate the geographical range of the species. They have been adopted to give an approximation of the range of each species within New Zealand.
K=
Kermadec Islands
A=
Aupourian - Kaipara Harbour, north around North Cape, encompassing the Three Kings Islands and south to East Cape
C=
Cookian - Lower North Island and the northern part of the South Island
F=
Forsterian - Otago, Fiordland and Stewart Island
M=
Moriorian - Chatham Islands, Pitt Island
An=
Antipodean - Subantarctic Islands of New Zealand
Fw =
Freshwater
L =
Land
N =
North Island
S =
South Island
E =
Endemic
I =
Introduced
R =
Recent
Sf =
Subfossil
Fo =
Fossil