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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)
> subrostratum (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:
=Chlorostoma undulosum A. Adams, 1853
=Diloma plumbea Hutton, 1882
=Diloma subrostratum novaezelandiae (Anton, 1838)
=Diloma subrostratum subrostratum (Gray, 1835)
=Labio corrosa A. Adams, 1853
=Labio hectori Hutton, 1873
=Labio pica A. Adams, 1853
=Monodonta subrostrata Gray, 1835
=Trochus attritus Hombron & Jacquinot, 1848
=Trochus novaezelandiae Anton, 1838
=Zediloma (Fractarmilla) corrosa (A. Adams, 1853)
=Zediloma (Fractarmilla) corrosa zebrina Powell, 1946
Images: Diloma subrostratum (Gray, 1835)
Very common in muddy areas, on or under stones
(novaezelandiae form) - Dusky Sound, Fiordland, NZ. 20mm
Holotype of Zediloma (Fractarmilla) corrosa zebrina Powell, collected in 1934, Beach Harbour, Breaksea Sound, Fiordland, NZ (MA71156). © Auckland Museum (CC-BY)
Holotype of Zediloma (Fractarmilla) corrosa zebrina Powell, collected in 1934, Beach Harbour, Breaksea Sound, Fiordland, NZ (MA71156). © 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)
> subrostratum (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:
=Chlorostoma undulosum A. Adams, 1853
=Diloma plumbea Hutton, 1882
=Diloma subrostratum novaezelandiae (Anton, 1838)
=Diloma subrostratum subrostratum (Gray, 1835)
=Labio corrosa A. Adams, 1853
=Labio hectori Hutton, 1873
=Labio pica A. Adams, 1853
=Monodonta subrostrata Gray, 1835
=Trochus attritus Hombron & Jacquinot, 1848
=Trochus novaezelandiae Anton, 1838
=Zediloma (Fractarmilla) corrosa (A. Adams, 1853)
=Zediloma (Fractarmilla) corrosa zebrina Powell, 1946
Details: Diloma subrostratum (Gray, 1835)
Size/Grows to:
Width 30mm, Height 30mm
Distribution:
North, South and Stewart Island
Notes:
Mudflat Top Shell, 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.488)
  • 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)
  • Gardner, N.W. Dec/1975 Diloma subrostrata novaezelandiae, Poirieria, 8(2)

*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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