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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 [in Forbes & Hanley], 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 [in Forbes & Hanley], 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
Geographical Range:
ACFME.
Notes:
Marine, Endemic
Distribution Map
 
References and Publications

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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
E =
Endemic
I =
Introduced
R =
Recent
Sf =
Subfossil
Fo =
Fossil