Oreoryzomys balneator (Thomas, 1900)

Don E. Wilson, Russell A. Mittermeier & Thomas E. Lacher, Jr, 2017, Cricetidae, Handbook of the Mammals of the World – Volume 7 Rodents II, Barcelona: Lynx Edicions, pp. 204-535 : 442

publication ID

https://doi.org/ 10.5281/zenodo.6707142

DOI

https://doi.org/10.5281/zenodo.6727209

persistent identifier

https://treatment.plazi.org/id/03F06D13-FF0D-20C4-0896-17B9016FF5D4

treatment provided by

Carolina (2022-06-23 16:42:12, last updated 2024-11-29 05:03:06)

scientific name

Oreoryzomys balneator
status

 

460. View Plate 23: Cricetidae

Peruvian Rice Rat

Oreoryzomys balneator View in CoL

French: Oryzomys de Banos / German: Peru-Reisratte / Spanish: Rata arrocera de Peru

Other common names: Ecuadorean Oreoryzomys

Taxonomy. Oryzomys balneator Thomas, 1900 View in CoL , “Mirador, 20 miles [= 32 km] E. of Banos [Tungurahua], Oriente of Ecuador. Altitude 1500 m [= 457 m].”

Oreoryzomys is sister to Microryzomys in molecular-based phylogenies; both genera are morphologically similar, suggesting that the former could be a junior synonym of the latter. A single record from El Chiral, El Oro (Ecuador), in the western slope of the Andes is pending taxonomic review for determineits true identity. Monotypic.

Distribution. E Andes Range in Ecuador and NE Peru. View Figure

Descriptive notes. Head—body 75-94 mm, tail 95-120 mm, hindfoot 23-5-27 mm. No specific data are available for body weight. Dorsal pelage of the Peruvian Rice Rat is dense, with short and dark ocherous hair, densely grizzled with dark brown. Ventral pelage is grayish to buffy gray. Mystacial vibrissae are dense, thick, and long, extending beyond posterior margin of pinnae when bent. Ears are short and rounded. Tail is longer than head-body length, whitish along its basal one-half, with distal one-half uniformly dark brown; tail tip can be white in some specimens. Hindfeet are narrow and delicate, covered dorsally with short bicolored hair (brown proximally and white distally, or entirely white), and ungual tufts are short and do not conceal claws.

Habitat. Montane and cloud forest at elevations of 1500-2300 m. Type locality is rainy, cold, and windy and has a matrix of vegetation with sharp contrasts, including paramo mixed with temperate plants in valleys, intermixing with extensive areas of subtropical forest.

Food and Feeding. No information.

Breeding. No information.

Activity patterns. The Peruvian Rice Rat is terrestrial.

Movements, Home range and Social organization. No information.

Status and Conservation. Classified as Data Deficient on The IUCN Red List. The Peruvian Rice Rat still faces taxonomic uncertainty, and there is no recent information on its natural history.

Bibliography. Brito & Ojala-Barbour (2016), Eisenberg & Redford (1999), Musser & Carleton (2005), Pacheco et al. (2009), Percequillo (2015h), Tirira, Boada & Weksler (2008b), Weksler et al. (2006).

Gallery Image

458. Forest Small Rice Rat (Macroryzomys minutus), 459. Highland Small Rice Rat (Microryzomys altissimus), 460. Peruvian Rice Rat (Oreoryzomys balneator), 461. White-throated Montane Forest Rat (Drymoreomys albimaculatus), 462. Gray Rice Rat (Eremoryzomys polius), 463. Medium-tailed Rice Rat (Eremoryzomys mesocaudis), 464. Lund’s Water Rat (Lundomys molitor), 465. Paraguayan Rice Rat (Sooretamys angowya), 466. Brazilian False Rice Rat (Pseudoryzomys simplex), 467. Venezuelan Marsh Rat (Holochilus venexuelae), 468. Amazonian Marsh Rat (Holochilus sciureus), 469. Chacoan Marsh Rat (Holochilus chacarius), 470. Brazilian Marsh Rat (Holochilus brasiliensis), 471. Crafty Marsh Rat (Holochilus vulpinus), 472. Lagiglia’s Marsh Rat (Holochilus lagigliai), 473. Langguth’s Rice Rat (Cerradomys langguthi), 474. Vivo’s Rice Rat (Cerradomys vivoi), 475. Maracaju Rice Rat (Cerradomys maracajuensis), 476. Lindbergh's Rice Rat (Cerradomys scotti), 477. Akroa Rice Rat (Cerradomys akroai), 478. Marinho’s Rice Rat (Cerradomys marinhus), 479. Terraced Rice Rat (Cerradomys subflavus), 480. Goytaca Rice Rat (Cerradomys goytaca), 481. Ucayali Water Rat (Amphinectomys savamis), 482. Trinidad Water Rat (Nectomys palmipes), 483. Magdalena Water Rat (Nectomys magdalenae), 484. Western Amazonian Water Rat (Nectomys apicalis), 485. South American Water Rat (Nectomys rattus), 486. Atlantic Water Rat (Nectomys squamipes)

Gallery Image

Distribution. E Andes Range in Ecuador and NE Peru.

Kingdom

Animalia

Phylum

Chordata

Class

Mammalia

Order

Rodentia

SubOrder

Myomorpha

SuperFamily

Muroidea

Family

Cricetidae

Genus

Oreoryzomys