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Taxonomy
Family: Subfamily:
FISSURELLIDAE: EMARGINULINAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Vetigastropoda (Subclass)
> Lepetelllida (Order)
> Fissurelloidea (Superfamily)
> Fissurellidae (Family)
> Emarginulinae (Subfamily)
> Tugali (Genus)
> stewartiana (Species)
Genus Synonyms:
=Emarginula (Tugali) Gray, 1843
=Subemarginula (Tugalia) Gray, 1843
=Tugalia Gray, 1857
Images: Tugali stewartiana Powell, 1939
Dredged off Stewart Island, NZ. 16mm
Holotype, Ringaringa, Stewart Island, NZ (MA72154). © Auckland Museum (CC-BY)
Holotype, Ringaringa, Stewart Island, NZ (MA72154). © Auckland Museum (CC-BY)
Holotype, Ringaringa, Stewart Island, NZ (MA72154). © Auckland Museum (CC-BY)
Taxonomy
Family: Subfamily:
FISSURELLIDAE: EMARGINULINAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Vetigastropoda (Subclass)
> Lepetelllida (Order)
> Fissurelloidea (Superfamily)
> Fissurellidae (Family)
> Emarginulinae (Subfamily)
> Tugali (Genus)
> stewartiana (Species)
Genus Synonyms:
=Emarginula (Tugali) Gray, 1843
=Subemarginula (Tugalia) Gray, 1843
=Tugalia Gray, 1857
Details: Tugali stewartiana Powell, 1939
Size/Grows to:
Length 57mm, Width 18mm, Height 10mm
Distribution:
Stewart Island and Foveaux Strait
Geographical Range:
FE.
Notes:
Endemic, Less tapered anteriorly, and has much coarser sculpture - fewer, broader and flatter radials, fewer and stronger concentric ridges
Distribution Map
 
References and Publications
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.40)
  • Powell, A.W.B. 1939 The Mollusca of Stewart Island., Records of the Auckland Institute and Museum, 2 (p.227) Original Description

*98 © Museum of New Zealand Te Papa Tongarewa (CC-BY-NC-ND)

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
E =
Endemic
I =
Introduced
R =
Recent
Sf =
Subfossil
Fo =
Fossil
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