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Species List for Genus: Diloma
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Mollusca (Phylum) > Gastropoda (Class) > Vetigastropoda (Subclass) > Trochida (Order) > Trochoidea (Superfamily) > Trochidae (Family) > Monodontinae (Subfamily) > Diloma (Genus)
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  • Genus: Diloma

  • Diloma aethiops (Gmelin, 1791)
    =Anisodiloma lugubris (Gmelin, 1791), =Labio concolor A. Adams, 1853, =Monodonta reticularis W. Wood, 1828, =Trochus lugubris Gmelin, 1791, =Turbo aethiops Gmelin, 1791
    Width 30mm, Height 28mm, Marine, Endemic
    North, South, Stewart and Chatham Islands ACFME.
  • Diloma aridum (Finlay, 1927)
    =Zediloma arida Finlay, 1926
    Width 17mm, Height 19mm, Marine, Endemic, Purplish-black with pale yellow flecks
    Throughout New Zealand. Chatham and Auckland Islands. On sheltered mid-tidal rocks ACFMAnE.
  • Diloma bicanaliculatum (Dunker in Philippi, 1844)
    =Anisodiloma lugubris lenior Finlay, 1926, =Monodonta lugubris var. albina Mestayer, 1927, =Trochus bernardii R├ęcluz, 1852, =Trochus bicanaliculatus Dunker, 1844, =Trochus cingulatus Quoy & Gaimard, 1834, =Trochus gaimardi Philippi, 1851, =Trochus sulcatus W. Wood, 1828
    Width 18mm, Height 17mm, Marine, Endemic
    North, South and Stewart Island. Under stones at low tide ACFE.
  • Diloma coracinum (Philippi, 1851)
    =Trochocochlea excavata A. Adams & Angas, 1864, =Trochus coracinus Troschel, 1851
    Width 12mm, Height 12mm, Marine, Endemic
    North and upper South Island ACFE.
  • Diloma durvillaea Spencer, Marshall & Waters, 2009
    Width 13mm, Height 12mm, Marine, Endemic
    South Island. From Lyttelton Harbour south, under holdfasts & on blades of Durvillaea antarctica & adjacent rocks near low tide level CFAnE.
  • Diloma nigerrimum (Gmelin, 1791)
    =Monodonta crusoeana Pilsbry, 1889, =Monodonta nigerrima (Gmelin, 1791), =Turbo nigerrimus Gmelin, 1791, =Zediloma digna Finlay, 1926
    Height 26mm, Width 24mm, Marine
    North, South, Stewart, Chatham, Three Kings and Auckland Islands. On kelp at mid/high tide ACFMAn
  • Diloma subrostratum (Gray in Yate, 1835)
    =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
    Width 25mm, Height 25mm, Mudflat Top Shell, Marine, Endemic
    North, South and Stewart Island ACFE.
  • Diloma zelandicum (Quoy & Gaimard, 1834)
    =Monodonta melanoloma var. guttata Hutton, 1884, =Trochus atrovirens Philippi, 1851, =Trochus zelandicus Quoy & Gaimard, 1834
    Width 25mm, Height 20mm, Marine, Endemic
    North, South and Stewart Island ACFE.
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