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Taxonomy
Family: Subfamily:
CHAROPIDAE: THERASIINAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Heterobranchia (Subclass)
> Euthyneura (Infraclass)
> Tectipleura (Subterclass)
> Eupulmonata (Superorder)
> Stylommatophora (Order)
> Helicina (Suborder)
> [unassigned] Helicina (Infraorder)
> Punctoidea (Superfamily)
> Charopidae (Family)
> Therasiinae (Subfamily)
> Therasia (Genus)
> traversi (Species)
Synonymised Names:
=Helix (Thalassia) traversi E. A. E.A. Smith, 1884
=Thalassia neozelanica f. pallidula Suter, 1892
Images: Therasia traversi (E.A. Smith, 1884)
Collected Mar 1979, Waitawhero Saddle, Kaweka Forest SE of Turangi, Central Plateau, NZ. 10.1mm. Reproduced courtesy of Dave Roscoe
Collected Mar 1979, Waitawhero Saddle, Kaweka Forest SE of Turangi, Central Plateau, NZ. 10.1mm. Reproduced courtesy of Dave Roscoe
Collected Mar 1979, Waitawhero Saddle, Kaweka Forest SE of Turangi, Central Plateau, NZ. 10.1mm. Reproduced courtesy of Dave Roscoe
Collected Feb 2004, Watako, Silverstream, Upper Hutt, Wellington, NZ. 10.8mm. Reproduced courtesy of Dave Roscoe
Collected Feb 2004, Watako, Silverstream, Upper Hutt, Wellington, NZ. 10.8mm. Reproduced courtesy of Dave Roscoe
Collected Feb 2004, Watako, Silverstream, Upper Hutt, Wellington, NZ. 10.8mm. Reproduced courtesy of Dave Roscoe
Taxonomy
Family: Subfamily:
CHAROPIDAE: THERASIINAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Heterobranchia (Subclass)
> Euthyneura (Infraclass)
> Tectipleura (Subterclass)
> Eupulmonata (Superorder)
> Stylommatophora (Order)
> Helicina (Suborder)
> [unassigned] Helicina (Infraorder)
> Punctoidea (Superfamily)
> Charopidae (Family)
> Therasiinae (Subfamily)
> Therasia (Genus)
> traversi (Species)
Synonymised Names:
=Helix (Thalassia) traversi E. A. E.A. Smith, 1884
=Thalassia neozelanica f. pallidula Suter, 1892
Details: Therasia traversi (E.A. Smith, 1884)
Size/Grows to:
Width 12.5mm, Height 8mm
Distribution:
North Island and upper South Island, as far south as Kaikoura and Westport
Notes:
Land, Native - Endemic
View Distribution Map
References and Publications
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.317)
  • Smith, E.A. 1884 An account of the land and freshwater Mollusca collected during the Voyage of the 'Challenger' from December 1872 to May 1876, Proceedings of the Zoological Society of London, 52(3) (p.274) Original Description

NZ Geographical Regions
Key to symbols used in Checklist.
Fw =
Freshwater
L =
Land
N =
North Island
S =
South Island
R =
Recent
Sf =
Subfossil
Fo =
Fossil
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