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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
Type Data:
  • Staten Island, New York, USA, (holotype)
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)

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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