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Taxonomy
Family:
LASAEIDAE
Full Classification:
Mollusca (Phylum)
> Bivalvia (Class)
> Autobranchia (Subclass)
> Heteroconchia (Infraclass)
> Euhetrodonta (Subterclass)
> Imparidentia (Superorder)
> Galeommatida (Order)
> Galeommatoidea (Superfamily)
> Lasaeidae (Family)
> Arthritica (Genus)
> bifurca (Species)
Synonymised Names:
=Kellia bifurca Webster, 1908
=Lasaea neozelanica Suter, 1913
Images: Arthritica bifurca (Webster, 1908)
Holotype, collected pre 1908, off Orua Bay, Manukau Harbour, Auckland, NZ (MA70374). 6mm. © Auckland Museum (CC-BY)
Holotype, collected pre 1908, off Orua Bay, Manukau Harbour, Auckland, NZ (MA70374). 6mm. © Auckland Museum (CC-BY)
Holotype, collected pre 1908, off Orua Bay, Manukau Harbour, Auckland, NZ (MA70374). 6mm. © Auckland Museum (CC-BY)
Holotype, collected pre 1908, off Orua Bay, Manukau Harbour, Auckland, NZ (MA70374). 6mm. © Auckland Museum (CC-BY)
Collected 22 Feb 1974, Owhanga Bay, Whangaroa Harbour, Northland, NZ (M.041004). 6mm. © Museum of New Zealand Te Papa Tongarewa (CC-BY-NC-ND)
Collected 22 Feb 1974, Owhanga Bay, Whangaroa Harbour, Northland, NZ (M.041004). 6mm. © Museum of New Zealand Te Papa Tongarewa (CC-BY-NC-ND)
Collected 22 Feb 1974, Owhanga Bay, Whangaroa Harbour, Northland, NZ (M.041004). 6mm. © Museum of New Zealand Te Papa Tongarewa (CC-BY-NC-ND)
Taxonomy
Family:
LASAEIDAE
Full Classification:
Mollusca (Phylum)
> Bivalvia (Class)
> Autobranchia (Subclass)
> Heteroconchia (Infraclass)
> Euhetrodonta (Subterclass)
> Imparidentia (Superorder)
> Galeommatida (Order)
> Galeommatoidea (Superfamily)
> Lasaeidae (Family)
> Arthritica (Genus)
> bifurca (Species)
Synonymised Names:
=Kellia bifurca Webster, 1908
=Lasaea neozelanica Suter, 1913
Details: Arthritica bifurca (Webster, 1908)
Size/Grows to:
Width 6mm, Height 5mm
Distribution:
North and upper South Island
Geographical Range:
ACR.Fo.
Notes:
Marine, Recent, Fossil, Native - Endemic
Distribution Map
 
References and Publications
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.391)
  • Gardner, N.W. Jun/1974 The genus Arthritica Finlay, 1927 - Small Commensal Bivalves, Poirieria, 7(4) (p.77)
  • Webster, W.H. 1908 Additions to the New Zealand fauna., Transactions of the New Zealand Institute, 40 (p.254) Original Description

*98 © Museum of New Zealand Te Papa Tongarewa (CC-BY-NC-ND)

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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