Phylogeny and taxonomic revision of the endemic Malagasy genus Ptychochromis (Teleostei, Cichlidae), with the description of five new species and a diagnosis for Katria, new genus ; American Museum novitates, no. 3535

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dc.contributor.authorStiassny, Melanie L. J.en_US
dc.contributor.authorSparks, John S.en_US
dc.date.accessioned2006-09-18T16:17:52Z
dc.date.available2006-09-18T16:17:52Z
dc.date.issued2006en_US
dc.description55 p. : ill. (some col.), map ; 26 cm.en_US
dc.descriptionIncludes bibliographical references (p. 53-54).en_US
dc.description.abstractThe Malagasy cichlid genus Ptychochromis is revised and five new species are described, one of which is presumed to be extinct. The three valid nominal species, P. oligacanthus, P. grandidieri, and P. inornatus, are redescribed with diagnoses provided for each. A phylogeny of ptychochromin cichlids, derived from the simultaneous analysis of morphological features and nucleotide characters from a combination of mitochondrial and nuclear genes is presented. Ptychochromis is diagnosed by a suite of derived features of the pharynx, infraorbital series, and palatine morphology. In addition, the sister taxon to Ptychochromis, Ptychochromoides katria, is removed from Ptychochromoides and placed in its own genus, Katria, which is described herein as new. Katria is diagnosed by a unique pigmentation pattern, the absence of paired anterior gas bladder chambers that approach the neurocranium, an elevated vertebral count, and a slender caudal peduncle. An unnamed clade comprising Ptychochromis and Katria is diagnosed by a suite of derived features of the pharynx, sensory canal system, supraneural patterning, and palatine morphology.en_US
dc.format.extent4887017 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/5813
dc.languageengen_US
dc.language.isoen_US
dc.publisherNew York, NY : American Museum of Natural Historyen_US
dc.relation.ispartofseriesAmerican Museum novitates, no. 3535en_US
dc.subject.lccQL1 .A436 no.3535 2006en_US
dc.subject.lcshPtychochromis -- Phylogeny.en_US
dc.subject.lcshPtychochromisen_US
dc.subject.lcshKatriaen_US
dc.subject.lcshCichlids -- Phylogeny.en_US
dc.subject.lcshCichlids -- Madagascaren_US
dc.subject.lcshFreshwater fishes -- Madagascaren_US
dc.subject.lcshFishes -- Madagascaren_US
dc.titlePhylogeny and taxonomic revision of the endemic Malagasy genus Ptychochromis (Teleostei, Cichlidae), with the description of five new species and a diagnosis for Katria, new genus ; American Museum novitates, no. 3535en_US
dc.title.alternativeRevision of Ptychochromisen_US
dc.typetexten_US

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