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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Click here to filter list on Geographical RangeFamily: Mactridae
- Crassula aequilatera (Deshayes, 1854)
Width 75mm, Height 55mm
Diamond Surf Clam, Triangle Shell, Marine, Native - Endemic
North, South and Stewart Island. In shallow water off sandy beaches
ACF
- Cyclomactra ovata (Gray, 1843)
Width 80mm, Height 62mm
Marine, Native - Endemic
Northern and south-western North Island; northern, eastern and southern South Island, and Stewart, Auckland and Chatham Islands. Buried deeply in soft mud
ACFMAn
- Cyclomactra tristis (Reeve, 1854)
Width 60mm, Height 55mm
Marine, Native - Endemic, Buried in mud at low tide
North Island as far north as Auckland, northern South Island as far south as Christchurch, and Chatham Islands. Intertidal
ACFM
- Mactra ordinaria E.A. Smith, 1898
Width 19mm, Height 12mm
Marine, Native - 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 South Island as far south as Dunedin. In mud in shallow water
ACF
- Oxyperas elongatum (Quoy & Gaimard, 1835)
Length 111mm, Width 65mm
Long Trough Shell, Marine, Native - Endemic
King Bank and Three Kings Islands, north-eastern and south-western North Island, far northern and eastern South Island, Stewart and Chatham Islands, and Mernoo Bank. Shallow water to over 200 metres
ACFM
- Scalpomactra scalpellum (Reeve, 1854)
Length 34mm, Height 20mm
Marine, Native - Endemic
Three Kings, North, South, Stewart and Chatham Islands, and Mernoo Bank
ACF
- Spisula discors Gray, 1873
Width 90mm, Height 80mm, Thickness 45mm
Large Trough Shell, Marine, Native - Endemic, Darker, more inflated than Mactra murchisoni. Colour white under a dark brown periostracum
North-eastern and southern North Island, northern and southern South Island
ACF
- Spisula murchisoni Deshayes, 1854
Width 98mm, Height 80mm
Marine, Native - 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 Island and northern and southern South Island. On exposed sandy beaches
ACF
- Resania lanceolata Gray, 1852
Length 120mm, Height 57mm
Lance Mactra, Marine, Native - Endemic
North and South Islands, as far south as Warrington. Off sandy ocean beaches in shallow water
ACF
- Zenatia acinaces (Quoy & Gaimard, 1835)
Length 117mm, Height 54mm
Scimitar Mactra, Marine, Native - Endemic
North, South and Stewart Islands. Off sandy beaches in shallow water to about 50 metres
ACF
Key to 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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