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Taxonomy
Family:
VALLONIIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Heterobranchia (Subclass)
> Euthyneura (Infraclass)
> Tectipleura (Subterclass)
> Eupulmonata (Superorder)
> Stylommatophora (Order)
> Helicina (Suborder)
> Pupilloidei (Infraorder)
> Pupilloidea (Superfamily)
> Valloniidae (Family)
> Vallonia (Genus)
> excentrica (Species)
Genus Synonyms:
=Helix (Vallonia) Risso, 1826
Synonymised Names:
=Vallonia (Vallonia) excentrica Sterki, 1893
=Vallonia pulchella of authors
Images: Vallonia excentrica Sterki, 1893
Collected Paewhenua Road, Otorohanga, Waikato, NZ. 2.4mm. Reproduced courtesy of Dave Roscoe
Collected Paewhenua Road, Otorohanga, Waikato, NZ. 2.4mm. Reproduced courtesy of Dave Roscoe
Collected Paewhenua Road, Otorohanga, Waikato, NZ. 2.4mm. Reproduced courtesy of Dave Roscoe
Taxonomy
Family:
VALLONIIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Heterobranchia (Subclass)
> Euthyneura (Infraclass)
> Tectipleura (Subterclass)
> Eupulmonata (Superorder)
> Stylommatophora (Order)
> Helicina (Suborder)
> Pupilloidei (Infraorder)
> Pupilloidea (Superfamily)
> Valloniidae (Family)
> Vallonia (Genus)
> excentrica (Species)
Genus Synonyms:
=Helix (Vallonia) Risso, 1826
Synonymised Names:
=Vallonia (Vallonia) excentrica Sterki, 1893
=Vallonia pulchella of authors
Details: Vallonia excentrica Sterki, 1893
Size/Grows to:
Width 2.3mm, Height 1.2mm
Distribution:
North and South Island
Geographical Range:
L.N.S.
Notes:
Land, Non-indigenous, Native to the Mediterranean, western Europe, Atlantic islands, and North America. Introduced to St. Helena, South Africa, Australia, and New Zealand
Distribution Map
 
References and Publications
  • Barker, G.M. 1999 Naturalised Terrestrial Stylommatophora (Mollusca: Gastropoda), Fauna of New Zealand, Manaaki Whenua Press (p.100)
  • Goulstone, J.F., Mayhill, P.C., Parrish, G.R. 1993 An Illustrated Guide to the Land Mollusca of the Te Paki ecological region, Northland, New Zealand, New Zealand Journal of Zoology, 34 (p.24)
  • Sep/1966 Notes of Interest: Vallonia excentrica, Poirieria, 3(4-5) (p.56)

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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