Journal
RECORDS OF THE AUSTRALIAN MUSEUM
Volume 63, Issue 2-3, Pages 167-202Publisher
AUSTRALIAN MUSEUM
DOI: 10.3853/j.0067-1975.63.2011.1581
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- Commonwealth of Australia
- Western Australian Government
- Perth
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Fifteen species of the camaenid land snail Amplirhagada, which are endemic to the Kimberley region in Western Australia, are newly described in the present work based on material collected in 1987 during the Kimberley Rainforest Survey of the then Dept. Conservation and Land Management, Western Australia. These species were listed previously as new discoveries under preliminary species identifications but have never been validly described. All of them were collected in rainforest and vine thicket patches across the Kimberley, where they generally occur as narrow-range endemics. The species are most typically characterized by a peculiar penial anatomy while other morphological structures, such as the shell or radula, provide characters less or not suitable for unambiguous species identification. Three manuscript taxa listed as potentially new are here preliminarily subsumed under an already described taxon, A. carinata Solem, 1981. By contrast to all other species treated herein, A. carinata has a fairly large distribution around the Walcott Inlet in the Southwest Kimberley. This taxon also reveals a comparatively large amount of morphological variation not only with respect to the shell but also to its genital anatomy. This unusual morphological variation is discussed as being potentially indicative of on-going lineage differentiation and the presence of a species complex, which cannot be satisfactorily resolved at the present stage.
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