Westland, South Island, New Zealand.
Exhibits high levels of genetic variability, but without constant geographical patterns#R; also shows a degree of morphological variability along latitudinal and altitudinal gradients; further study required. Senior synonym A. maxima apparently unused for more than a century, now recommended for formal suppression#R. Monotypic.
New Zealand in NW South I, mainly W of main divide.
Introduced to Little Barrier I, off NW North I.
Food and feeding
Status and conservation
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