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Species List for Genus: Arthritica
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Mollusca (Phylum) > Bivalvia (Class) > Autobranchia (Subclass) > Heteroconchia (Infraclass) > Euhetrodonta (Subterclass) > Imparidentia (Superorder) > Galeommatida (Order) > Galeommatoidea (Superfamily) > Lasaeidae (Family) > Arthritica (Genus)
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  • Genus: Arthritica

  • Arthritica bifurca (Webster, 1908)
    Width 6mm, Height 5mm
    Marine, Recent, Fossil, Native - Endemic
    North and upper South Island
    ACR.Fo.
  • Arthritica crassiformis Powell, 1933
    Width 5.5mm, Height 4.5mm
    Marine, Native - Endemic, Commensal upon the pholad, rock boring Anchomasa, usually found around the base of the siphon and along the lower mantle edges
    North Island and northern part of South Island
    AC
  • Arthritica hulmei Ponder, 1965
    Width 3.4mm, Height 2.8mm
    Marine, Native - Endemic, Commensal with a large polychaete worm, the seamouse, Aphrodita australis
    Northland to Wellington, Cook Strait area
    AC
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