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Rhagada revisited: on the taxonomy of species from the Kimberley and Dampierland, Western Australia (Pulmonata, Camaenidae).

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Title: Rhagada revisited: on the taxonomy of species from the Kimberley and Dampierland, Western Australia (Pulmonata, Camaenidae).
Authors: Burghardt, Ingo1, Köhler, Frank1
Source: Molluscan Research. Feb2015, Vol. 35 Issue 1, p37-50. 14p.
Subjects: Camaenidae, Classification, Anatomy, Mitochondrial DNA, Phylogeny
Geographic Terms: Kimberley (B.C.)
Abstract: The genus Rhagada is the second most diverse camaenid genus in Australia. We examined anatomical and mitochondrial characters of previously unidentified material from the Kimberley that was earmarked to potentially represent new species in recently published molecular phylogenetic studies. Our comparisons revealed that specimens from Gibbings Island (‘R. sp. Gibbings’) were morphologically and genetically most similar to Rhagada cygna from the Dampier Peninsula. Hence, ‘R. sp. Gibbings’ is considered to be identical to R. cygna. In addition, we found that R. cygnaas so delimited is not clearly distinguished from the second species on the Dampier Peninsula, Rhagada bulgana. Both species differ rather subtly in anatomical and mitochondrial characters, indicating their close relationships and potentially incomplete evolutionary differentiation. Furthermore, we describe two new species based on comparative morphology and mitochondrial sequences: Rhagada wororan. sp. from the Prince Regent Reserve in the Kimberley and Rhagada karajarrin. sp. from Dampierland. The present study confirms that species in Rhagadaare best identified by means of both morphological and molecular data. http://zoobank.org/urn:lsid:zoobank.org:pub:556E1866-6F9E-4CC0-8ACF-CD56E929501F [ABSTRACT FROM PUBLISHER]
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Description
Abstract:The genus Rhagada is the second most diverse camaenid genus in Australia. We examined anatomical and mitochondrial characters of previously unidentified material from the Kimberley that was earmarked to potentially represent new species in recently published molecular phylogenetic studies. Our comparisons revealed that specimens from Gibbings Island (‘R. sp. Gibbings’) were morphologically and genetically most similar to Rhagada cygna from the Dampier Peninsula. Hence, ‘R. sp. Gibbings’ is considered to be identical to R. cygna. In addition, we found that R. cygnaas so delimited is not clearly distinguished from the second species on the Dampier Peninsula, Rhagada bulgana. Both species differ rather subtly in anatomical and mitochondrial characters, indicating their close relationships and potentially incomplete evolutionary differentiation. Furthermore, we describe two new species based on comparative morphology and mitochondrial sequences: Rhagada wororan. sp. from the Prince Regent Reserve in the Kimberley and Rhagada karajarrin. sp. from Dampierland. The present study confirms that species in Rhagadaare best identified by means of both morphological and molecular data. http://zoobank.org/urn:lsid:zoobank.org:pub:556E1866-6F9E-4CC0-8ACF-CD56E929501F [ABSTRACT FROM PUBLISHER]
ISSN:13235818
DOI:10.1080/13235818.2014.940637