Rhytida greenwoodi stephenensis: Difference between revisions
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The shell is larger than typical ''Rhytida greenwoodi'' subspecies, but much more loosely coiled, and with considerable acceleration of the last [[whorl (mollusc)|whorl]]. The oblique spiral ridges extend strongly on to the [[dorsum (biology)|dorsal]] surface, thereby intensifying the malleated appearance of the subsidiary [[sculpture (mollusc)|sculpture]]. The shell colour is olive-green, without an [[umbilicus (mollusc)|umbilicus]] brown zone. |
The shell is larger than typical ''Rhytida greenwoodi'' subspecies, but much more loosely coiled, and with considerable acceleration of the last [[whorl (mollusc)|whorl]]. The oblique spiral ridges extend strongly on to the [[dorsum (biology)|dorsal]] surface, thereby intensifying the malleated appearance of the subsidiary [[sculpture (mollusc)|sculpture]]. The shell colour is olive-green, without an [[umbilicus (mollusc)|umbilicus]] brown zone. |
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The shell diameter is up to 34 [[millimetre|mm]], and height up to 19 mm. |
The shell diameter is up to 34 [[millimetre|mm]], and height up to 19 mm. |
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The shell is very appealing to reptile enthusiests, such as aaron grosse and jaydyn potter. |
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==References== |
==References== |
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Revision as of 08:55, 22 October 2008
| Rhytida greenwoodi stephenensis | |
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| Scientific classification | |
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| Species: | R. greenwoodi
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| Subspecies: | R. greenwoodi stephenensis
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| Trinomial name | |
| Rhytida greenwoodi stephenensis Powell, 1930
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Rhytida greenwoodi stephenensis 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 Stephens Island in Cook Strait, New Zealand.
Shell description
The shell is larger than typical Rhytida greenwoodi subspecies, but much more loosely coiled, and with considerable acceleration of the last whorl. The oblique spiral ridges extend strongly on to the dorsal surface, thereby intensifying the malleated appearance of the subsidiary sculpture. The shell colour is olive-green, without an umbilicus brown zone.
The shell diameter is up to 34 mm, and height up to 19 mm. The shell is very appealing to reptile enthusiests, such as aaron grosse and jaydyn potter.
References
- Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1