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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)
> bicanaliculatum (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 lenior Finlay, 1926
=Monodonta lugubris var. albina Mestayer, 1927
=Trochus bernardii Récluz, 1852
=Trochus bicanaliculatus Dunker, 1844
=Trochus cingulatus Quoy & Gaimard, 1834
=Trochus gaimardi Philippi, 1851
=Trochus sulcatus W. Wood, 1828
Images: Diloma bicanaliculatum (Dunker, 1845)
Under rocks, Matai Bay, Northland, NZ. 18mm
Taxonomy
Family: Subfamily:
TROCHIDAE: MONODONTINAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Vetigastropoda (Subclass)
> Trochida (Order)
> Trochoidea (Superfamily)
> Trochidae (Family)
> Monodontinae (Subfamily)
> Diloma (Genus)
> bicanaliculatum (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 lenior Finlay, 1926
=Monodonta lugubris var. albina Mestayer, 1927
=Trochus bernardii Récluz, 1852
=Trochus bicanaliculatus Dunker, 1844
=Trochus cingulatus Quoy & Gaimard, 1834
=Trochus gaimardi Philippi, 1851
=Trochus sulcatus W. Wood, 1828
Details: Diloma bicanaliculatum (Dunker, 1845)
Size/Grows to:
Width 18mm, Height 17mm
Distribution:
North, South and Stewart Island. Under stones at low tide
Notes:
Marine, Native - Endemic
Distribution Map
 
References and Publications
  • Carson, K., Elliott, B.F., Raven, J.L., Keil, F. Nov/2013 Notes on NZ Collected Species, Cookia, 25 (p.14)
  • 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.54)

*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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