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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)
> Rhytida (Genus)
> stephenensis (Species)
Genus Synonyms:
=Eurhytida Möllendorff, 1902
=Helix (Rhytida) Albers, 1860
=Rhytida (Eurhytida) Möllendorff, 1902
Images: Rhytida stephenensis Powell, 1930
North Kaikoura, NZ. 31mm
North Kaikoura, NZ. 31mm
North Kaikoura, NZ. 31mm
Irongate Creek, Kaikoura, Canterbury, NZ. 25-30mm
Irongate Creek, Kaikoura, Canterbury, NZ. 25-30mm
Irongate Creek, Kaikoura, Canterbury, NZ. 25-30mm
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)
> Rhytida (Genus)
> stephenensis (Species)
Genus Synonyms:
=Eurhytida Möllendorff, 1902
=Helix (Rhytida) Albers, 1860
=Rhytida (Eurhytida) Möllendorff, 1902
Details: Rhytida stephenensis Powell, 1930
Size/Grows to:
Length 34mm, Height 19mm
Distribution:
Nelson & Marlborough, Stephen Island, Cook Strait
Geographical Range:
L.S.
Notes:
Land, Native - Endemic, Large, robust, and usually heavily sculptured with oblique ridges
Distribution Map
 
References and Publications
  • Efford, M.G. 1998 Distribution and status of native carnivorous land snails in the genera Wainuia and Rhytida, Department of Conservation, Wellington, 101 (p.38)
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.344)
  • Powell, A.W.B. 1930 The Paryphantidae of New Zealand: their hypothetical ancestry, with descriptions of new species and a new genus, Records of the Auckland Institute and Museum, 1 (p.30) 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