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Taxonomy
Family:
RISSOIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> Littorinimorpha (Order)
> Rissooidea (Superfamily)
> Rissoidae (Family)
> Alvania (Genus)
> exserta (Species)
Genus Synonyms:
=Alvania (Linemera) Finlay, 1924 accepted, alternate representation
Synonymised Names:
=Alvania (Linemera) exserta (Suter, 1908) accepted, alternate representation
=Alvinia (Linemera) exserta (Suter, 1908)
=Rissoa (Alvania) exserta Suter, 1908
=Rissoa exserta Suter, 1908
Images: Alvania exserta (Suter, 1908)
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Taxonomy
Family:
RISSOIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> Littorinimorpha (Order)
> Rissooidea (Superfamily)
> Rissoidae (Family)
> Alvania (Genus)
> exserta (Species)
Genus Synonyms:
=Alvania (Linemera) Finlay, 1924 accepted, alternate representation
Synonymised Names:
=Alvania (Linemera) exserta (Suter, 1908) accepted, alternate representation
=Alvinia (Linemera) exserta (Suter, 1908)
=Rissoa (Alvania) exserta Suter, 1908
=Rissoa exserta Suter, 1908
Details: Alvania exserta (Suter, 1908)
Size/Grows to:
Height 2.6mm, Width 1.6mm
Distribution:
Off Otago Heads. Off Snares, Auckland and Campbell Islands
Geographical Range:
FAn
Notes:
Marine, Native - Endemic
Distribution Map
 
References and Publications
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.96)
  • Suter, H. 1908 Additions to the marine molluscan fauna of New Zealand, with descriptions of new species, Proceedings of the Malacological Society of London, 8 (p.28) 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