NZ Mollusca

Zelithophaga truncata (Gray, 1843)

Zelithophaga truncata
Eastern Beach, Auckland, 34mm
Zelithophaga truncata
The Boring Mussel - lives in soft rock, 34mm
Zelithophaga truncata
Buried in soft mudstone at mid/low tide, Whangaparaoa Peninsula, Auckland, NZ, 40-45mm
Classification: Mollusca - Bivalvia - Pteriomorphia - Mytilida - Mytilidae: Lithophaginae - Zelithophaga
Size/Grows to: Length 50mm, Height 15mm
Distribution: North and South Islands. Boring into soft rock [A.C.F.]
Notes: Endemic
Some known Localities
  • Hole off Darch Point, Whangarei Harbour, Northland, NZ
  • Off Castle Rock, Taurikura Bay, Whangarei Heads, 5-7 metres, Northland, NZ
  • Algies Bay, Kawau Bay, Auckland, NZ
  • Whangaparaoa Peninsula, Auckland, NZ
  • Murray's Bay, North Shore, Auckland, NZ
  • Takapuna Beach, Auckland, NZ
  • Ladies Bay, Waitemata Harbour, Auckland, NZ
  • Motukaraka Island, Beachlands, Auckland, NZ
  • Laingholm Reef, Auckland, NZ
  • Manukau Harbour, Auckland, NZ
  • Cornwallis, Manukau Harbour, Auckland, NZ
  • W of Little Blowhole, W side of Jones Head, South Head, Manukau Harbour, Auckland, NZ
  • Otamaroa, Cape Runaway, Bay of Plenty, NZ
  • Lorenzen Bay, Raglan Harbour, Waikato, NZ
  • Rurima Islets, NW of Whakatane, Bay of Plenty, NZ
  • Kawhia Harbour, Waikato, NZ
  • Off Hapuka Rock, Seal Rocks, Sugar Loaf Islands, New Plymouth, Taranaki, NZ *2
  • Punapaua platform, S of Paturau River, W of Collingwood, Nelson, NZ *2
  • Lyall Bay, Wellington, NZ
  • Island Bay, Wellington, NZ
  • Three Steeples, off Westport, Westland, NZ
  • Abbey Rocks, 7-11 metres, NE of Haast, Westland, NZ *2
more localities
  • Stevenson, A.G. Nov/2004: Collecting Rock Borers in New Zealand, Cookia, 16 (p.27)
  • Powell, A.W.B. 1979: New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.374)

Note: Localities are approximate, and represent only some of the known localities for the species.

*2 © Museum of New Zealand Te Papa Tongarewa CC BY-NC-ND