NZ Mollusca

Amphibola crenata (Gmelin, 1791)

Amphibola crenata
On mud flats around Auckland, 25mm
Amphibola crenata
The Mud Snail found commonly on high-tidal mud flats
Amphibola crenata
Houhora Harbour, on mud flats, Far North, NZ. Showing the faecal mud ring which houses the egg mass, 25mm
Classification: Mollusca - Gastropoda - Heterobranchia - Amphibolidae - Amphibola
Size/Grows to: Height 26mm, Width 26mm
Distribution: North and South Islands. On high-tidal mud-flats [A.C.F.]
Notes: Mud Snail, Karahu. Endemic
Some known Localities
  • Houhora Harbour, Far North, NZ
  • Rangiputa, Karikari Peninsula, Northland, NZ
  • Colville Bay, Coromandel, Hauraki Gulf, NZ
  • Tolaga Bay estuary, East Cape, NZ
  • Muriwai Beach, Gisborne, NZ
  • Tahunanui Estuary, Nelson, NZ
  • Hayward, B.W. Sep/2009: Mass mating of the mud snail, Amphibola crenata, Poirieria, 34 (p.23)
  • Golding, R.E., Ponder, W.F., Byrne, M. 2007: Taxonomy and anatomy of Amphiboloidea (Gastropoda: Heterobranchia: Archaeopulmonata), Zootaxa, 1476 (p.7)
  • Walsby, J.R., Morton, J.E. 1982: Chitons, Limpets & Topshells & Pulmonates (Amphineura, Archaeogastropoda & Pulmonata), Marine Molluscs, University of Auckland, Leigh Marine Laboratory, 1 (p.77)
  • Gardner, N.W. May/1980: Amphibola crenata (Gmelin, 1791), Poirieria, 10(5) (p.82)
  • Powell, A.W.B. 1979: New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.294)

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