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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)
    Width 38mm, Height 35mm
    Marine, Native - Endemic
    North, South, Stewart and Chatham Islands
  • Diloma aridum (Finlay, 1926)
    Height 19mm, Width 17mm
    Marine, Native - Endemic, Purplish-black with pale yellow flecks
    Throughout New Zealand. Chatham and Auckland Islands. On sheltered mid-tidal rocks
  • Diloma bicanaliculatum (Dunker, 1845)
    Width 18mm, Height 17mm
    Marine, Native - Endemic
    North, South and Stewart Island. Under stones at low tide
  • Diloma coracinum (Philippi, 1851)
    Width 12mm, Height 12mm
    Marine, Native - Endemic
    North and upper South Island
  • Diloma durvillaea Spencer, Marshall & Waters, 2009
    Width 13mm, Height 12mm
    Marine, Native - Endemic
    South Island. From Lyttelton Harbour south, under holdfasts & on blades of Durvillaea antarctica & adjacent rocks near low tide level
  • Diloma nigerrimum (Gmelin, 1791)
    Height 30mm, Width 26mm
    Marine
    North, South, Stewart, Chatham, Three Kings and Auckland Islands. On kelp at mid/high tide
  • Diloma subrostratum (Gray, 1835)
    Width 30mm, Height 30mm
    Mudflat Top Shell, Marine, Native - Endemic
    North, South and Stewart Island
  • Diloma zelandicum (Quoy & Gaimard, 1834)
    Width 32mm, Height 24mm
    Marine, Native - Endemic
    North, South and Stewart Island
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