Coues’ rice rat Oryzomys couesi, copyright Paulina Arias Caballero de Miguel.

Belongs within: Sigmodontinae.

Oryzomys, the rice rats, are a genus of semiaquatic rodents found in southern North and South America. Members of this genus have short and coarse fur, relatively long tails and broad hind feet (Goodwin 1969).

|--O. albigularisIT07
|--O. alfaroiG69
| |--O. a. alfaroiG69
| |--O. a. chapmaniG69
| |--O. a. gloriaensisG69
| |--O. a. guerrerensisG69
| `--O. a. palatinusG69
|--O. antillarumFS15
|--O. aphrastusBP87
|--O. argentatusBP87
|--O. aureusT00b
|--O. auriventerIT07
|--O. baeopsT00a
|--O. balneator Thomas 1900T00a
|--O. bauriBP87
|--O. bolivarisIT07
|--O. buccinatusIT07
|--O. caliginosusHY75
|--O. capitoIT07
|--O. caudatus [=O. alfaroi caudatus]G69
|--O. childiT01
|--O. concolorHY75
|--O. couesiG69
| |--O. c. couesiG69
| |--O. c. aztecusG69
| `--O. c. mexicanusG69
|--O. cozumelaeBP87
|--O. curasoaeFS15
|--O. deviusIT07
|--O. dimidiatusIT07
|--O. emmonsaeLMZ05
|--O. fernandinaeBP87
|--O. flavicansT00a
|--O. galapagoensisIT07
|--O. gorgasiIT07
|--O. gracilisT00a
|--O. hammondiIT07
|--O. intectusIT07
|--O. intermediusIT07
|--O. keaysiIT07
|--O. kelloggiIT07
|--O. lamiaIT07
|--O. laticepsT00a
|--O. legatusIT07
|--O. levipesIT07
|--O. longicaudatusT01
|--O. luciae Forsyth Major 1901FM01
|--O. macconnelliPCS05
|--O. megacephalusPCS05
|--O. melanotisG69
| |--O. m. melanotisG69
| `--O. m. rostratusG69
|--O. meridensisT01
|--O. minutusHY75
|--O. narboroughiBP87
|--O. nelsoniBP87
|--O. nitidus (Thomas 1884) [=Hesperomys laticeps var. nitidus]T01
|--O. obtusirostrisT01
|--O. oniscusIT07
|--O. palustrisIT07
|--O. peninsulaeBP87
|--O. piloris (Zimmermann 1777) (see below for synonymy)FM01
|--O. poliusIT07
|--O. praetor Thomas 1900T00b
|--O. princepsT00b
|--O. ratticepsIT07
|--O. rhabdopsIT07
|--O. saturatiorIT07
|--O. stolzmanniT01
|--O. subflavusIT07
|--O. sylvaticus Thomas 1900T00a
|--O. talamancaeIT07
|--O. xantheolusIT07
`--O. yunganusIT07

Oryzomys piloris (Zimmermann 1777) [=Castor piloris; incl. Mus desmarestii Fischer 1829, M. pilorides Desmarest 1826, Hesperomys (Megalomys) pilorides, Holochilus (Me.) pilorides]FM01

*Type species of generic name indicated


[BP87] Burton, J. A., & B. Pearson. 1987. Collins Guide to the Rare Mammals of the World. Collins: London.

[FS15] Faurby, S., & J.-C. Svenning. 2015. A species-level phylogeny of all extant and late Quaternary extinct mammals using a novel heuristic-hierarchical Bayesian approach. Molecular Phylogenetics and Evolution 84: 14–26.

[FM01] Forsyth Major, C. I. 1901. The musk-rat of Santa Lucia (Antilles). Annals and Magazine of Natural History, series 7, 7: 204–206.

[G69] Goodwin, G. G. 1969. Mammals from the State of Oaxaca, Mexico, in the American Museum of Natural History. Bulletin of the American Museum of Natural History 141 (1): 1–269, 40 pls.

[HY75] Herrin, C. S., & C. E. Yunker. 1975. Systematics of neotropical Hirstionyssus mites with special emphasis on Venezuela (Acarina: Mesostigmata). Brighman Young University Science Bulletin—Biological Series 20 (2): 93–127.

[IT07] Isaac, N. J. B., S. T. Turvey, B. Collen, C. Waterman & J. E. M. Baillie. 2007. Mammals on the EDGE: conservation priorities based on threat and phylogeny. PloS One 2 (3): e296.

[LMZ05] Lambert, T. D., J. R. Malcolm & B. L. Zimmerman. 2005. Variation in small mammal species richness by trap height and trap type in southeastern Amazonia. Journal of Mammalogy 86 (5): 982–990.

[PCS05] Percequillo, A. R., A. P. Carmignotto & M. J. de J. Silva. 2005. A new species of Neusticomys (Ichthyomyini, Sigmodontinae) from central Brazilian Amazonia. Journal of Mammalogy 86 (5): 873–880.

[T00a] Thomas, O. 1900a. Descriptions of new Neotropical mammals. Annals and Magazine of Natural History, series 7, 5: 269–274.

[T00b] Thomas, O. 1900b. Descriptions of two new murines from Peru and a new hare from Venezuela. Annals and Magazine of Natural History, series 7, 5: 354–357.

[T01] Thomas, O. 1901. New mammals from Peru and Bolivia, with a list of those recorded from the Inambari River, upper Madre de Dios. Annals and Magazine of Natural History, series 7, 7: 178–190.

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