Vertigo ovata Say, 1822 Height 2.7mm, Width 1.7mm Land, Non-indigenous, Native to North America, from Alaska and northern Canada southwards over most of the U.S.A. to Florida, the Gulf of Mexico, and California. The only known naturalised occurrence outside of North America is New Zealand North Island L.N.
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