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Species List for Family: Mactridae
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Mollusca (Phylum) > Bivalvia (Class) > Autobranchia (Subclass) > Heteroconchia (Infraclass) > Euhetrodonta (Subterclass) > Imparidentia (Superorder) > Venerida (Order) > Mactroidea (Superfamily) > Mactridae (Family)
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  • Family: Mactridae

  • Lutraria bruuni Powell, 1967
    Marine, Endemic
    Off Kermadec Islands
    KE.
  • Crassula aequilatera (Deshayes, 1854)
    Width 75mm, Height 55mm
    Diamond Surf Clam, Triangle Shell, Marine, Endemic
    North, South and Stewart Island. In shallow water off sandy beaches
    ACFE.
  • Cyclomactra ovata (Gray, 1843)
    Width 80mm, Height 62mm
    Marine, Endemic
    North, South and Chatham Islands. Buried deeply in soft mud
    ACFME.
  • Cyclomactra tristis (Reeve, 1854)
    Width 60mm, Height 55mm
    Marine, Endemic, Buried in mud at low tide
    North and South Islands
    ACFE.
  • Mactra ordinaria E.A. Smith, 1898
    Width 19mm, Height 12mm
    Marine, Endemic, Sculpture of very fine and dense concentric lirations, slightly stronger at the sides. Distinguished from juvenile discors by the lack of a posterior ridge
    North Island and northern half of South Island. In mud in shallow water
    ACE.
  • Oxyperas bellianum (W.R.B. Oliver, 1915)
    Marine, Endemic
    Kermadec Islands
    KE.
  • Oxyperas elongatum (Quoy & Gaimard, 1835)
    Length 111mm, Width 65mm
    Long Trough Shell, Marine, Endemic
    North, South, Stewart and Chatham Islands. Shallow water to over 120 metres
    ACFME.
  • Scalpomactra scalpellum (Reeve, 1854)
    Length 34mm, Height 20mm
    Marine, Endemic
    North, South, Stewart and Chatham Islands
    ACFE.
  • Spisula discors Gray, 1873
    Width 90mm, Height 80mm, Thickness 45mm
    Large Trough Shell, Marine, Endemic, Darker, more inflated than Mactra murchisoni. Colour white under a dark brown periostracum
    North, South and Stewart Island
    ACFE.
  • Spisula murchisoni Deshayes, 1854
    Width 98mm, Height 80mm
    Marine, Endemic, Wider, less inflated than Mactra discors. More laterally ovate, inequilateral, has transverse plications on the lateral teeth, and the periostracum is always pale straw colour
    North, South and Stewart Island. On exposed sandy beaches
    ACFE.
  • Resania lanceolata Gray, 1852
    Length 120mm, Height 57mm
    Lance Mactra, Marine, Endemic
    North and South Islands. Off sandy ocean beaches in shallow water
    ACFE.
  • Zenatia acinaces (Quoy & Gaimard, 1835)
    Length 117mm, Height 54mm
    Scimitar Mactra, Marine, Endemic
    North and South Islands. Off sandy beaches in shallow water to about 50 metres
    ACFE.
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