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Taxonomy
Family:
PHILOBRYIDAE
Full Classification:
Mollusca (Phylum)
> Bivalvia (Class)
> Pteriomorphia (Subclass)
> Arcida (Order)
> Limopsoidea (Superfamily)
> Philobryidae (Family)
> Adacnarca (Genus)
> trapezina (Species)
Genus Synonyms:
=Hochstetterina Thiele, 1934
=Philobrya (Hochstetterina) Thiele, 1934
Images: Adacnarca trapezina (F. Bernard, 1897)
Collected 1 Sep 1976, off Taieri, S of Dunedin, NZ (M.067017). © Museum of New Zealand Te Papa Tongarewa (CC-BY-NC-ND)
Collected 1 Sep 1976, off Taieri, S of Dunedin, NZ (M.067017). © Museum of New Zealand Te Papa Tongarewa (CC-BY-NC-ND)
Taxonomy
Family:
PHILOBRYIDAE
Full Classification:
Mollusca (Phylum)
> Bivalvia (Class)
> Pteriomorphia (Subclass)
> Arcida (Order)
> Limopsoidea (Superfamily)
> Philobryidae (Family)
> Adacnarca (Genus)
> trapezina (Species)
Genus Synonyms:
=Hochstetterina Thiele, 1934
=Philobrya (Hochstetterina) Thiele, 1934
Details: Adacnarca trapezina (F. Bernard, 1897)
Size/Grows to:
Length 1.5mm, Height 1.1mm
Distribution:
North Island, Wellington area. South, Stewart Island and Bounty Islands
Geographical Range:
CFAn
Notes:
Marine, Native - Endemic
Distribution Map
 
References and Publications
  • Huber, M. 2010 Compendium of Bivalves 1, ConchBooks: Hackenheim, Germany (p.591)
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.369)
  • Bernard, F.R. 1897 Etudes comparatives sur la coquille des lamellibranches. II. Les genres Philobrya et Hochstetteria, Journal de Conchyliologie, 45(1) (p.18) Original Description

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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