Cerradomys maracajuensis (Langguth & Bonvicino, 2002)

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 : 446

475.

Maracaju Rice Rat

Cerradomys maracajuensis

French: Cerradomys de Maracaju / German: Maracuja-Cerradomaus / Spanish: Rata arrocera de Maracaju

Other common names: Maracaju Oryzomys

Taxonomy. Oryzomys maracajuensis Langguth & Bonvicino, 2002 , Fazenda da Mata, Maracaju Municipality, Mato Grosso do Sul, Brazil.

This species is monotypic.

Distribution. Extreme SE Peru (Puno Region), Bolivia, Paraguay, and SC Brazil.

Descriptive notes. Head-body 140-185 mm, tail 171-227 mm, hindfoot 34-43 mm. No specific data are available for body weight. Dorsum of the Maracaju Rice Rat is grizzled and brown or yellowish, strongly lined with black. Lateral color is lighter than dorsum. Venter is intense yellow, buffy or grayish buff. Tailis slightly bicolored. Skull is heavily built, large, and robust. Mesopterygoid fossa is fully ossified or with narrow sphenopalatine vacuities. Incisors are opisthodont, and molars are pentalophodont, with well-developed mesolophid. Chromosomal complement is 2n = 56, FN = 54.

Habitat. Open bush and grasses environments, gallery forest, and seasonally flooded areas.

Food and Feeding. No information.

Breeding. Pregnant Maracaju Rice Rats were caught in June and September, with two and four embryos.

Activity patterns. No information.

Movements, Home range and Social organization. No information.

Status and Conservation. Classified as Least Concern on The IUCN Red List.

Bibliography. Anderson (1997), Langguth & Bonvicino (2002), Percequillo (2015b), Percequillo, Hingst-Zaher & Bonvicino (2008).

Figures

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)

Distribution. Extreme SE Peru (Puno Region), Bolivia, Paraguay, and SC Brazil.