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Taxonomy
Family: Subfamily:
OSTREIDAE: OSTREINAE
Full Classification:
Mollusca (Phylum)
> Bivalvia (Class)
> Pteriomorphia (Subclass)
> Ostreida (Order)
> Ostreoidea (Superfamily)
> Ostreidae (Family)
> Ostreinae (Subfamily)
> Ostrea (Genus)
> equestris (Species)
Genus Synonyms:
=Tiostrea Chanley & Dinamani, 1980
Synonymised Names:
=Ostrea aupouria Dinamani, 1981
=Ostrea spreta d'Orbigny, 1846
=Ostreola equestris (Say, 1834)
Images: Ostrea equestris Say, 1834
Reotahi, Whangarei Heads, Northland, NZ. 40mm
Holotype of Ostrea aupouria Dinamani, 1981, collected 09 Aug 1979, Parekura Bay, Bay of Islands. (M.067817). 45mm. © Museum of New Zealand Te Papa Tongarewa (CC-BY-NC-ND)
Taxonomy
Family: Subfamily:
OSTREIDAE: OSTREINAE
Full Classification:
Mollusca (Phylum)
> Bivalvia (Class)
> Pteriomorphia (Subclass)
> Ostreida (Order)
> Ostreoidea (Superfamily)
> Ostreidae (Family)
> Ostreinae (Subfamily)
> Ostrea (Genus)
> equestris (Species)
Genus Synonyms:
=Tiostrea Chanley & Dinamani, 1980
Synonymised Names:
=Ostrea aupouria Dinamani, 1981
=Ostrea spreta d'Orbigny, 1846
=Ostreola equestris (Say, 1834)
Details: Ostrea equestris Say, 1834
Size/Grows to:
Length 45mm, Width 30mm
Distribution:
Northland to Raglan and Hauraki Gulf
Geographical Range:
AC
Notes:
Marine, Weakly sculptured, and found in lower tidal zone than S.glomerata
Distribution Map
 
References and Publications
  • Marshall, B.A., Spencer, H.G. 2013 Comments on some taxonomic changes affecting marine Bivalvia of the New Zealand region recently introduced in Huber's Compendium of bivalves, with some additional taxonomic changes, Molluscan Research, 33(1) (p.42)
  • Dinamani, P. 1981 Description of a new species of incubatory oyster from northern New Zealand, with notes on its ecology and reproduction, New Zealand Journal of Marine and Freshwater Research, 15 (p.110)

Key to Geographical Ranges
NZ Map showing 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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