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A new genus for Aepeomys fuscatus Allen, 1912, and Oryzomys intectus Thomas, 1921 : enigmatic murid rodents from Andean cloud forests. American Museum novitates ; no. 3373

Show simple item record Voss, Robert S. en_US Gómez-Laverde, Marcela. en_US Pacheco Torres, Víctor R. (Víctor Rául) en_US 2005-10-06T16:40:57Z 2005-10-06T16:40:57Z 2002 en_US
dc.description 42 p. : ill. (2 col.), map ; 26 cm. en_US
dc.description Includes bibliographical references (p. 37-40). en_US
dc.description.abstract Two nominal species of Neotropical murid rodents (subfamily Sigmodontinae) that have long been referred to different genera are here placed in a new genus in recognition of their distinctness from other named supraspecific taxa. Aepeomys fuscatus Allen and Oryzomys intectus Thomas share a unique combination of external and craniodental character states that diagnose Handleyomys, new genus, with fuscatus as its type species. Morphological comparisons of Handleyomys with the type species of Aepeomys Thomas and Oryzomys Baird provide a basis for preliminary inferences about phylogenetic relationships. Five shared, derived character states support the hypothesis that Handleyomys is an oryzomyine, but no close relationship between the new genus and any particular oryzomyine clade is indicated by the data at hand. All known specimens of Handleyomys are from the western Andes (Cordillera Occidental) and the central Andes (Cordillera Central) of Colombia, where they have been collected at 20 localities ranging in elevation from 1500 to 2800 m above sea level. Analyses of morphological data suggest that two valid allopatric species are represented, of which H. fuscatus is endemic to the western Andes and H. intectus to the central Andes. Although no other mammalian clade is known to have the same geographic distribution, recent analyses of amphibian biogeography in Colombia suggest that Handleyomys is part of a nonvolant cloud-forest vertebrate fauna with allopatric sister taxa in the Cordillera Occidental and Cordillera Central. Much revisionary taxonomic research, however, is needed to assess the generality of this pattern of endemism among other cloud-forest mammals. en_US
dc.format.extent 2930107 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher New York, NY : American Museum of Natural History en_US
dc.relation.ispartofseries American Museum novitates ; no. 3373 en_US
dc.subject.lcc QL1 .A436 no.3373, 2002 en_US
dc.subject.lcsh Handleyomys fuscatus en_US
dc.subject.lcsh Handleyomys intectus en_US
dc.subject.lcsh Muridae -- Colombia en_US
dc.subject.lcsh Muridae -- Andes Region en_US
dc.subject.lcsh Rodents -- Colombia en_US
dc.subject.lcsh Rodents -- Andes Region en_US
dc.subject.lcsh Mammals -- Colombia en_US
dc.subject.lcsh Mammals -- Andes Region en_US
dc.title A new genus for Aepeomys fuscatus Allen, 1912, and Oryzomys intectus Thomas, 1921 : enigmatic murid rodents from Andean cloud forests. American Museum novitates ; no. 3373 en_US
dc.title.alternative New genus of Andean rodents en_US
dc.type text en_US

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  • American Museum Novitates
    Novitates (Latin for "new acquaintances"), published continuously and numbered consecutively since 1921, are short papers that contain descriptions of new forms and reports in zoology, paleontology, and geology. New numbers are published at irregular intervals.

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