An introduction to the systematics of small-bodied Neacomys (Rodentia, Cricetidae) from Peru with descriptions of two new species. (American Museum novitates, no. 3913)
| dc.contributor.author | Sánchez-Vendizú, Pamela. | |
| dc.contributor.author | Pacheco Torres, Víctor R. (Víctor Rául) | |
| dc.contributor.author | Vivas-Ruiz, Dan. | |
| dc.date.accessioned | 2018-12-11T18:37:04Z | |
| dc.date.available | 2018-12-11T18:37:04Z | |
| dc.date.issued | 2018-12-10 | |
| dc.description | 38 pages : illustrations (some color), color map ; 26 cm. | |
| dc.description.abstract | The genus Neacomys includes 10 recognized species of Neotropical spiny mice in the tribe Oryzomyini. Five species have previously been reported from Peru, but the small-bodied Peruvian taxa remain unrevised. In this report, we present the first systematic and taxonomic revision of small-bodied Neacomys populations in Peru and describe two new species based on molecular, morphological, and karyotype data: (1) Neacomys rosalindae, sp. nov., from northeastern Peru, is distinguished from congeneric species by, among other differences, short incisive foramina with a wide maxillary portion of the septum, a small subsquamosal fenestra, and a karyotype of 2n = 48, FN = 50. (2) Neacomys macedoruizi, sp. nov., from central Peru, is distinguished by its gray-based ventral fur, large infraorbital foramen, and karyotype of 2n = 28, FN = 36, with a distinctively large pair of metacentric chromosomes. The results of our molecular analyses suggest that N. minutus (as currently recognized) is a species complex comprised of N. minutus sensu stricto, N. macedoruizi, and a third form that remains to be described. The other species described here, N. rosalindae, is the sister taxon to a cluster that includes the N. minutus complex plus N. musseri. Our data suggest that the upper Amazon River constitutes an important dispersal barrier for species in this genus. | en_US |
| dc.identifier.uri | http://digitallibrary.amnh.org/handle/2246/6917 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | American Museum of Natural History. | en_US |
| dc.relation.ispartofseries | American Museum novitates;no.3913. | |
| dc.subject | Neacomys rosalindae. | en_US |
| dc.subject | Neacomys macedoruizi. | en_US |
| dc.subject | Oryzomyini--Classification--Molecular aspects. | en_US |
| dc.subject | Rodents. | en_US |
| dc.subject | Peru. | en_US |
| dc.title | An introduction to the systematics of small-bodied Neacomys (Rodentia, Cricetidae) from Peru with descriptions of two new species. (American Museum novitates, no. 3913) | en_US |
| dc.title.alternative | Systematics of small-bodied Neacomys. | en_US |
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