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Species List for Genus: Retusa
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Mollusca (Phylum) > Gastropoda (Class) > Heterobranchia (Subclass) > Euthyneura (Infraclass) > Tectipleura (Subterclass) > Cephalaspidea (Order) > Bulloidea (Superfamily) > Retusidae (Family) > Retusa (Genus)
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  • Genus: Retusa

  • Retusa opima (Finlay, 1926)
    Height 3.3mm, Width 1.8mm
    Marine, Native - Endemic
    Northland to Stewart Island
    ACF
  • Retusa oruaensis (Webster, 1908)
    Height 4mm, Width 2mm
    Marine, Native - Endemic
    North, South and Chatham Islands. In shell sand
    ACFM
  • Retusa striata (Hutton, 1873)
    Height 3mm, Width 2.5mm
    Marine, Native - Endemic
    South Island, Stewart and Chatham Islands. Snares, Antipodes, Auckland and Campbell Islands
    CFMAn
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