Rhytida greenwoodi greenwoodi

Taxobox
name = "Rhytida greenwoodi greenwoodi"


image_caption =
status =
regnum = Animalia
phylum = Mollusca
classis = Gastropoda
ordo = Pulmonata
familia = Rhytididae
genus = "Rhytida"
species = "R. greenwoodi"
subspecies = "R. greenwoodi greenwoodi"
trinomial = "Rhytida greenwoodi greenwoodi"
trinomial_authority = (Gray, 1850)

"Rhytida greenwoodi greenwoodi" is a subspecies of medium-sized, air-breathing predatory land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae.

Distribution

This snail is endemic to the North and South islands of New Zealand. It is found from Auckland to Wellington, including some offshore islands such as Waiheke, in the North Island, and sporadically at the north of the South Island.

hell description

The shell is rather depressed, but with rounded whorls, strongly sculptured with radial anastomosing wrinkles, less prominent on the base. There are four or five oblique spiral ridges that develop over the periphery of the body whorl. The shell colour is fuscous, often tinged olive-green, and dark chestnut within the umbilicus. The shell diameter is up to 27 mm, and the shell height is up to 17 mm.

References

* Powell A. W. B., "New Zealand Mollusca", William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1