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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 approxomation of the range of each species within New Zealand.
Kermadec Islands
Aupourian - Kaipara Harbour, north around North Cape, encompassing the Three Kings Islands and south to East Cape
Cookian - Lower North Island and the northern part of the South Island
Forsterian - Otago, Fiordland and Stewart Island
Moriorian - Chatham Islands, Pitt Island
Antipodean - Subantarctic Islands of New Zealand
FW =
L =
E =
I =
Bivalvia - Protobranchia - Nuculida - Family: Nuculidae

Nuculidae: Nuculinae


Genus: Austronucula

Height 1.7mm, Width 2.2mm, Thickness 1mm, Endemic
Tasman Sea, off West Nelson [CE.]
Austronucula schencki Powell, 1939
Height 1.0mm, Width 1.15mm, Endemic
Stewart Island and Snares Islands, also recently recorded from the Chatham Islands [FMAnE.]

Genus: Linucula

Linucula hartvigiana (Dohrn, 1864)
Height 7mm, Width 8mm, Thickness 5.8mm, Nut Shell. Endemic
Throughout NZ, Chathams, Auckland and Campbell Islands [ACFMAnE.]
Linucula recens Dell, 1956
Height 3.5mm, Width 4mm, Thickness 2mm, Endemic
Off North, South Islands to Otago, Tasman Sea and Chatham Rise [ACFME.]

Genus: Nucula

Nucula certisinus Finlay, 1930
Height 1.6mm, Width 1.8mm, Endemic
Doubtless Bay, Northland [AE.]
Nucula nitidula A.Adams, 1856
Height 8mm, Width 8mm, Thickness 4.5mm, Endemic
Throughout NZ. Stewart, Snares and Chatham Islands [ACFMAnE.]
Nucula nitidulaformis Powell, 1971
Height 4.5mm, Width 4.8mm, Thickness 2.9mm
Bay of Plenty, North Island [A]
Nucula rossiana Finlay, 1930
Height 5mm, Width 5.8mm, Endemic
Fiordland, Stewart, Auckland, Campbell and Antipodes Islands. Under stones at low tide to around 35 metres [FMAnE.]

Genus: Nucula (Lamellinucula)

Height 1.8mm, Width 2mm, Endemic
South Island, Fiordland to Otago, Stewart, Snares and Chatham Islands [FME.]

Genus: Pronucula

Pronucula bollonsi Powell, 1955
Height 2mm, Width 2.3mm, Endemic
Off Auckland Islands, 10-180 metres [AnE.]
Kermadec Islands [K.]
Pronucula maoria Powell, 1937
Height 1.5mm, Width 1.8mm, Thickness 1.1mm, Endemic
Off Three Kings Islands [AE.]
Pronucula mesembrina Hedley, 1916
Height 1.7mm, Width 2.2mm, Endemic
Macquarie Island [AnE.]
Pronucula tenuis Powell, 1927
Height 1mm, Width 1.5mm, Thickness 0.8mm, Endemic
North and South Island, South West Otago. Off Snares and Antipodes Islands [ACFAnE.]

Genus: Varinucula

Varinucula gallinacea (Finlay, 1930)
Height 8.7mm, Width 9.8mm, Thickness 4mm, Endemic
North, South and Chatham Islands [ACFME.]

Nuculidae: Nuculominae


Genus: Ennucula

Ennucula strangei (A.Adams, 1856)
Height 11mm, Width 13mm, Endemic
North, South, Stewart Islands and Chatham Rise [ACFME.]
Height 4.8mm, Width 5.6mm, Endemic
East Cape to Chatham Rise. Cook Strait and Challenger Plateau [CME.]