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Taxonomy
Family: Subfamily:
TROCHIDAE: MONODONTINAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Vetigastropoda (Subclass)
> Trochida (Order)
> Trochoidea (Superfamily)
> Trochidae (Family)
> Monodontinae (Subfamily)
> Diloma (Genus)
> nigerrimum (Species)
Genus Synonyms:
=Anisodiloma Finlay, 1926
=Cavodiloma Finlay, 1926
=Fractarmilla Finlay, 1926
=Melagraphia Gray, 1847
=Monodonta (Neodiloma) P. Fischer, 1885
=Neodiloma P. Fischer, 1885
=Trochus (Diloma) Philippi, 1845
=Zediloma Finlay, 1926
=Zediloma (Fractarmilla) Finlay, 1926
Synonymised Names:
=Monodonta crusoeana Pilsbry, 1889
=Monodonta nigerrima (Gmelin, 1791)
=Turbo nigerrimus Gmelin, 1791
=Zediloma digna Finlay, 1926
Images: Diloma nigerrimum (Gmelin, 1791)
On kelp at mid-high tide, Kaikoura, Canterbury, NZ. 25mm
On kelp at mid-high tide, Kaikoura, Canterbury, NZ. 25mm
On kelp at mid-high tide, Kaikoura, Canterbury, NZ. 25mm
Holotype of Zediloma digna Finlay, collected St. Clair, Dunedin, Otago, NZ (MA70870). © Auckland Museum (CC-BY)
Holotype of Zediloma digna Finlay, collected St. Clair, Dunedin, Otago, NZ (MA70870). © Auckland Museum (CC-BY)
Taxonomy
Family: Subfamily:
TROCHIDAE: MONODONTINAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Vetigastropoda (Subclass)
> Trochida (Order)
> Trochoidea (Superfamily)
> Trochidae (Family)
> Monodontinae (Subfamily)
> Diloma (Genus)
> nigerrimum (Species)
Genus Synonyms:
=Anisodiloma Finlay, 1926
=Cavodiloma Finlay, 1926
=Fractarmilla Finlay, 1926
=Melagraphia Gray, 1847
=Monodonta (Neodiloma) P. Fischer, 1885
=Neodiloma P. Fischer, 1885
=Trochus (Diloma) Philippi, 1845
=Zediloma Finlay, 1926
=Zediloma (Fractarmilla) Finlay, 1926
Synonymised Names:
=Monodonta crusoeana Pilsbry, 1889
=Monodonta nigerrima (Gmelin, 1791)
=Turbo nigerrimus Gmelin, 1791
=Zediloma digna Finlay, 1926
Details: Diloma nigerrimum (Gmelin, 1791)
Size/Grows to:
Height 30mm, Width 26mm
Distribution:
North, South, Stewart, Chatham, Three Kings and Auckland Islands. On kelp at mid/high tide
Notes:
Marine
Distribution Map
 
References and Publications
  • Donald, K.M., Kennedy, M., Spencer, H.G. 2005 The phylogeny and taxonomy of austral monodontine topshells (Mollusca: Gastropoda: Trochidae), inferred from DNA sequences, Molecular Phylogenetics and Evolution, 37 (p.482)
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.53)

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

NZ Geographical Regions
Key to symbols used in Checklist.
Fw =
Freshwater
L =
Land
N =
North Island
S =
South Island
R =
Recent
Sf =
Subfossil
Fo =
Fossil
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