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Taxonomy
Family:
CALYPTRAEIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> Littorinimorpha (Order)
> Calyptraeoidea (Superfamily)
> Calyptraeidae (Family)
> Sigapatella (Genus)
> tenuis (Species)
Genus Synonyms:
=Calyptraea (Sigapatella) Lesson, 1831
=Clypeola Gray, 1868
=Sigapatella (Sigapatella) Lesson, 1831
=Sigapatella (Spirogalerus) Finlay & Marwick, 1937
=Spirogalerus Finlay & Marwick, 1937
=Zegalerus Finlay, 1926
Synonymised Names:
=Clypeola tenuis Gray, 1867
=Sigapatella (Sigapatella) tenuis (Gray, 1867) accepted, alternate representation
=Trochita tenuis (Gray, 1867)
=Zegalerus tenuis (Gray, 1867)
Images: Sigapatella tenuis (Gray, 1867)
In beach drift, Ngunguru, Northland, NZ. 15mm
Taxonomy
Family:
CALYPTRAEIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> Littorinimorpha (Order)
> Calyptraeoidea (Superfamily)
> Calyptraeidae (Family)
> Sigapatella (Genus)
> tenuis (Species)
Genus Synonyms:
=Calyptraea (Sigapatella) Lesson, 1831
=Clypeola Gray, 1868
=Sigapatella (Sigapatella) Lesson, 1831
=Sigapatella (Spirogalerus) Finlay & Marwick, 1937
=Spirogalerus Finlay & Marwick, 1937
=Zegalerus Finlay, 1926
Synonymised Names:
=Clypeola tenuis Gray, 1867
=Sigapatella (Sigapatella) tenuis (Gray, 1867) accepted, alternate representation
=Trochita tenuis (Gray, 1867)
=Zegalerus tenuis (Gray, 1867)
Details: Sigapatella tenuis (Gray, 1867)
Size/Grows to:
Length 23mm, Height 10mm
Distribution:
Three Kings, North, South, Stewart and Chatham Islands. 0-604 metres, attached to hard substrate
Geographical Range:
ACFM
Notes:
Marine, Native - Endemic, Oblique spiral threads on the teleoconch, smooth periostracum when not worn off
Distribution Map
 
References and Publications
  • Marshall, B.A. 2003 A review of the Recent and late Cenozoic Calyptraeidae of New Zealand (Mollusca: Gastropoda), The Veliger, 46(2) (p.139)
  • Cumber, R.A. Aug/1981 An unusual form of Zegalerus sp. from Great Exhibition Bay, Poirieria, 11(1) (p.5)
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.149)
  • Gray, J.E. 1868 Notes on the specimens of Calyptraeidae in Mr. Cuming's collection, Proceedings of the Zoological Society of London (p.735) 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
R =
Recent
Sf =
Subfossil
Fo =
Fossil
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