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Taxonomy
Family:
SIPHONARIIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Heterobranchia (Subclass)
> Euthyneura (Infraclass)
> Tectipleura (Subterclass)
> Siphonarimorpha (Superorder)
> Siphonariida (Order)
> Siphonarioidea (Superfamily)
> Siphonariidae (Family)
> Williamia (Genus)
> radiata nutata (Species)
Genus Synonyms:
=Allerya Mörch, 1877
=Brondelia Bourguignat, 1862
=Parascutum Cossmann, 1890
=Roya Iredale, 1912
=Scutulum Monterosato, 1877
Synonymised Names:
=Capulus nutatus Hedley, 1908
=Roya kermadecensis Iredale, 1912
=Williamia kermadecensis (Iredale, 1912)
=Williamia nutata (Hedley, 1908)
Images: Williamia radiata nutata (Hedley, 1908)
Scuba off Northland, NZ. 7mm
Collected in beach drift, Rarawa, Far North, NZ. 7.8mm
Taxonomy
Family:
SIPHONARIIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Heterobranchia (Subclass)
> Euthyneura (Infraclass)
> Tectipleura (Subterclass)
> Siphonarimorpha (Superorder)
> Siphonariida (Order)
> Siphonarioidea (Superfamily)
> Siphonariidae (Family)
> Williamia (Genus)
> radiata nutata (Species)
Genus Synonyms:
=Allerya Mörch, 1877
=Brondelia Bourguignat, 1862
=Parascutum Cossmann, 1890
=Roya Iredale, 1912
=Scutulum Monterosato, 1877
Synonymised Names:
=Capulus nutatus Hedley, 1908
=Roya kermadecensis Iredale, 1912
=Williamia kermadecensis (Iredale, 1912)
=Williamia nutata (Hedley, 1908)
Details: Williamia radiata nutata (Hedley, 1908)
Size/Grows to:
Length 8mm, Width 6mm
Distribution:
Northland NZ and Kermadec Islands
Geographical Range:
KA
Notes:
Marine
Distribution Map
 
References and Publications
  • Brook, F.J., Marshall, B.A. 1998 The coastal molluscan fauna of the northern Kermadec Islands, southwest Pacific Ocean, Journal of the Royal Society of New Zealand, 28 (p.232)
  • Marshall, B.A. 1981 The genus Williamia in the western Pacific (Mollusca: Siphonariidae), New Zealand Journal of Zoology, 8(4) (p.488)
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.65)
  • Gardner, N.W. Dec/1977 Roya kermadecensis Iredale, 1912, Poirieria, 9(3) (p.43)
  • Powell, A.W.B. 1976 On the considerable influx of warm water molluscs that have invaded northern New Zealand waters within recent years, Records of the Auckland Institute and Museum, 13 (p.142)
  • Iredale, T. 1912 New generic names and new species of marine Mollusca, Proceedings of the Malacological Society of London, 10(3) (p.218)
  • Hedley, C. 1908 Studies on Australian Mollusca, Proceedings of the Linnean Society, NSW, 33 (p.467) 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