Rhytida australis is a species of small, air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae.
Distribution This species is endemic to Stewart Island in New Zealand.Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 They are also in Native Island, which is an island off the east coast of Stewart Island.
Life cycle The dimensions of the eggs of Rhytida australis are 2.75 × 2.25, 2.75 × 2, 2.75 × 2.25 mm.O'Connor A. C. (June) 1945. Notes on the Eggs of New Zealand Paryphantidae, With Description of a New Subgenus. Transactions of the Royal Society of New Zealand, volume 5, 1945-46, pages 54-57.
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