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Taxonomy
Family:
RISSOELLIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Heterobranchia (Subclass)
> Euthyneura (Infraclass)
> Acteonimorpha (Subterclass)
> Rissoelloidea (Superfamily)
> Rissoellidae (Family)
> Rissoella (Genus)
> cystophora (Species)
Genus Synonyms:
=Heterorissoa Iredale, 1912
=Jeffreysia Alder, 1850
=Jeffreysiella Thiele, 1912
=Jeffreysina Thiele, 1925
=Jeffreysiopsis Thiele, 1912
=Rissoella (Jeffreysiella) Thiele, 1912
=Rissoella (Phycodrosus) Rehder, 1943
=Rissoella (Rissoella) Gray, 1847
=Rissoella (Zelaxitas) Finlay, 1926
=Zelaxitas Finlay, 1926
Synonymised Names:
=Laevilitorina cystophora Finlay, 1924
=Rissoella (Zelaxitas) cystophora (Finlay, 1924) accepted, alternate representation
Images: Rissoella cystophora (Finlay, 1924)
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Taxonomy
Family:
RISSOELLIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Heterobranchia (Subclass)
> Euthyneura (Infraclass)
> Acteonimorpha (Subterclass)
> Rissoelloidea (Superfamily)
> Rissoellidae (Family)
> Rissoella (Genus)
> cystophora (Species)
Genus Synonyms:
=Heterorissoa Iredale, 1912
=Jeffreysia Alder, 1850
=Jeffreysiella Thiele, 1912
=Jeffreysina Thiele, 1925
=Jeffreysiopsis Thiele, 1912
=Rissoella (Jeffreysiella) Thiele, 1912
=Rissoella (Phycodrosus) Rehder, 1943
=Rissoella (Rissoella) Gray, 1847
=Rissoella (Zelaxitas) Finlay, 1926
=Zelaxitas Finlay, 1926
Synonymised Names:
=Laevilitorina cystophora Finlay, 1924
=Rissoella (Zelaxitas) cystophora (Finlay, 1924) accepted, alternate representation
Details: Rissoella cystophora (Finlay, 1924)
Size/Grows to:
Height 1.1mm, Width 0.8mm
Distribution:
East coast of North, South, Stewart and Chatham Islands, mostly on large brown algae
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.120)
  • Finlay, H. 1924 Additions to the Recent Molluscan Fauna of New Zealand, Transactions and Proceedings of the Royal Society of New Zealand, 55 (p.523) Original Description

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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