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Species List for Genus: Powellisetia
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Mollusca (Phylum) > Gastropoda (Class) > Caenogastropoda (Subclass) > Littorinimorpha (Order) > Rissooidea (Superfamily) > Rissoidae (Family) > Powellisetia (Genus)
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  • Genus: Powellisetia

  • Powellisetia australis (R.B. Watson, 1886)
    Height 2.5mm, Width 1.45mm
    Marine
    Sub-Antarctic Islands, deep
    An
  • Powellisetia bilirata Ponder, 1965
    Height 1.05mm, Width 0.68mm
    Marine, Endemic
    Northland
    AE.
  • Powellisetia crassilabrum (Powell, 1940)
    Height 1.29mm, Width 1.09mm
    Marine, Endemic
    Northland
    AE.
  • Powellisetia gradata (Suter, 1908)
    Height 1.65mm, Width 1.1mm
    Marine, Endemic
    Off Otago, Stewart, Snares and Bounty Islands
    FAnE.
  • Powellisetia lineata (E.C. Smith, 1962)
    Height 1.4mm, Width 0.96mm
    Marine, Endemic, Low tide in algae
    Stewart Island
    FE.
  • Powellisetia microstriata (R. Murdoch, 1905)
    Height 2.07mm, Width 1.1mm
    Marine, Endemic
    Deep water off South Island, Snares and Bounty Islands
    FAnE.
  • Powellisetia porcellana (Suter, 1908)
    Height 1.8mm, Width 1.3mm
    Marine, Endemic
    Off south of the South Island and Snares Islands
    FAnE.
  • Powellisetia porcellanoides (Powell, 1937)
    Height 1.35mm, Width 0.88mm
    Marine, Endemic
    Off Three Kings Islands to Mayor Island, Bay of Plenty
    AE.
  • Powellisetia retusa (Powell, 1927)
    Height 1.8mm, Width 1.0mm
    Marine, Endemic
    South of South Island, Stewart, Snares, Auckland, Bounty and Chatham Islands
    FMAnE.
  • Powellisetia subgradata (Powell, 1937)
    Height 1.7mm, Width 1.1mm
    Marine, Endemic
    Off Three Kings Islands to Mayor Island, Bay of Plenty
    AE.
  • Powellisetia subtenuis (Powell, 1937)
    Height 1.2mm, Width 0.8mm
    Marine, Endemic
    Throughout NZ
    ACFMAnE.
  • Powellisetia tenuisculpta (Powell, 1933)
    Height 1.25mm, Width 0.75mm
    Marine, Endemic
    South of South Island. Stewart and Bounty Islands
    FAnE.
  • Powellisetia unicarinata (Powell, 1930)
    Height 1.19mm, Width 0.59mm
    Marine, Endemic
    Northland to Bay of Plenty
    AE.
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