Species List for Subfamily: Mactrinae
Mollusca (Phylum) > Bivalvia (Class) > Heterodonta (Subclass) > Euhetrodonta (Infraclass) > Imparidentia (Superorder) > Venerida (Order) > Mactroidea (Superfamily) > Mactridae
(Family) > Mactrinae
Click here to filter list on Geographical Range
Length 75mm, Height 55mm, Diamond Surf Clam, Marine, Endemic
North, South and Stewart Island. In shallow water off sandy beaches ACFE.
Length 80mm, Height 62mm, Marine, Endemic
North, South and Chatham Islands. Buried deeply in soft mud ACFME.
Length 60mm, Height 55mm, Marine, Endemic
North Island. Buried in mud at low tide ACE.
Mactra (Maorimactra) ordinaria
Length 15mm, Height 10mm, 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.
(Quoy & Gaimard, 1835)
Length 110mm, Width 65mm, Marine, Endemic
North, South, Stewart and Chatham Islands. Shallow water to over 120 metres ACFME.
Length 30mm, Height 19mm, Marine, Endemic
North, South, Stewart and Chatham Islands ACFE.
Spisula (Spisulona) discors
Height 80mm, Length 90mm, 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 (Spisulona) murchisoni
Width 85mm, Height 70mm, 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.