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Key to 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 approxomation 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

Gyraulus kahuica Finlay & Laws, 1931

Classification:Gastropoda - Pulmonata - Hygrophila
Family:PLANORBIDAE
Size/Grows to:Length 6mm, Width 5mm, Height 1.75mm
Distribution:North and South Island
Geographical Range:FW.N.S.E.
Notes:
Much larger than G.corinna, 3.9-6.0 mm in diameter, yet with only 3-3.5 whorls, which are more accellerated
References and Publications:
  • Powell, A.W.B. 1979: New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.297)