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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)
> aethiops (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:
=Anisodiloma lugubris (Gmelin, 1791)
=Labio concolor A. Adams, 1853
=Monodonta reticularis W. Wood, 1828
=Trochus lugubris Gmelin, 1791
=Turbo aethiops Gmelin, 1791
Images: Diloma aethiops (Gmelin, 1791)
Ocean Beach, Whangarei, Northland, NZ. 28mm
Intertidal among oysters, Auckland, NZ
On rocks at mid/low tide, Tapotupotu Bay, Far North, NZ. ~20mm
Taxonomy
Family: Subfamily:
TROCHIDAE: MONODONTINAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Vetigastropoda (Subclass)
> Trochida (Order)
> Trochoidea (Superfamily)
> Trochidae (Family)
> Monodontinae (Subfamily)
> Diloma (Genus)
> aethiops (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:
=Anisodiloma lugubris (Gmelin, 1791)
=Labio concolor A. Adams, 1853
=Monodonta reticularis W. Wood, 1828
=Trochus lugubris Gmelin, 1791
=Turbo aethiops Gmelin, 1791
Details: Diloma aethiops (Gmelin, 1791)
Size/Grows to:
Width 38mm, Height 35mm
Distribution:
North, South, Stewart and Chatham Islands
Geographical Range:
ACFM
Notes:
Marine, Native - Endemic
Distribution Map
 
References and Publications
  • Williams, S.T., Karube, S., Ozawa, T. 2008 Molecular systematics of Vetigastropoda: Trochidae, Turbinidae and Trochoidea redefined, Zoologica Scripta, 37 (p.487)
  • 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)
  • Willan, R.C., Marshall, B.A., Climo, F.M., Cernohorsky, W.O. 1980 Rectification of nomenclature for Melagraphia aethiops (Gmelin) and Diloma bicanaliculata (Dunker) (Mollusca: Trochidae), New Zealand Journal of Marine and Freshwater Research, 14 (p.414)
  • 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)

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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