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Taxonomy
Family: Subfamily:
RHYTIDIDAE: RHYTIDINAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Heterobranchia (Subclass)
> Euthyneura (Infraclass)
> Tectipleura (Subterclass)
> Eupulmonata (Superorder)
> Stylommatophora (Order)
> Helicina (Suborder)
> Rhytidoidei (Infraorder)
> Rhytidoidea (Superfamily)
> Rhytididae (Family)
> Rhytidinae (Subfamily)
> Rhytidarex (Genus)
> johnsoni (Species)
Genus Synonyms:
=Rhytida (Rhytidarex) Powell, 1948
Synonymised Names:
=Rhytida (Rhytidarex) johnsoni Powell, 1948
Images: Rhytidarex johnsoni (Powell, 1948)
Holotype, collected Jan 1948, North East Island, Three Kings Islands, NZ (MA71110). 22mm. © Auckland Museum (CC-BY)
Holotype, collected Jan 1948, North East Island, Three Kings Islands, NZ (MA71110). 22mm. © Auckland Museum (CC-BY)
Holotype, collected Jan 1948, North East Island, Three Kings Islands, NZ (MA71110). 22mm. © Auckland Museum (CC-BY)
Collected Feb 1974, North East Island, Three Kings Islands, NZ. Reproduced courtesy of Dave Roscoe
Collected Feb 1974, North East Island, Three Kings Islands, NZ. Reproduced courtesy of Dave Roscoe
Collected Feb 1974, North East Island, Three Kings Islands, NZ. Reproduced courtesy of Dave Roscoe
Taxonomy
Family: Subfamily:
RHYTIDIDAE: RHYTIDINAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Heterobranchia (Subclass)
> Euthyneura (Infraclass)
> Tectipleura (Subterclass)
> Eupulmonata (Superorder)
> Stylommatophora (Order)
> Helicina (Suborder)
> Rhytidoidei (Infraorder)
> Rhytidoidea (Superfamily)
> Rhytididae (Family)
> Rhytidinae (Subfamily)
> Rhytidarex (Genus)
> johnsoni (Species)
Genus Synonyms:
=Rhytida (Rhytidarex) Powell, 1948
Synonymised Names:
=Rhytida (Rhytidarex) johnsoni Powell, 1948
Details: Rhytidarex johnsoni (Powell, 1948)
Size/Grows to:
Length 22mm, Height 12mm
Distribution:
Three Kings Islands
Geographical Range:
L.
Notes:
Land, Native - Endemic
Distribution Map
 
References and Publications
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.347)
  • Climo, F.M. 1977 A new higher classification of New Zealand Rhytididae (Mollusca: Pulmonata), Journal of the Royal Society of New Zealand, 7(1) (p.61)
  • Powell, A.W.B. 1948 Land Mollusca of the Three Kings Islands, Records of the Auckland Institute and Museum, 3 (p.281) 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
R =
Recent
Sf =
Subfossil
Fo =
Fossil
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