Oecomys mamorae, Thomas, 1906

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 : 423

398.

Mamore Arboreal Rice Rat

Oecomys mamorae

French: Oecomys du Mamoré / German: Mamore-Baumreisratte / Spanish: Rata arrocera arboricola de Mamoré

Other common names: Mamore Oecomys

Taxonomy. Oryzomys (Qecomys) mamorae Thomas, 1906 , “Mosetenes, Upper Mamoré, Yungas, Bolivia.” Restricted by U. F. J. Pardinas and colleagues in 2016 to Muchanes, on the right forested side of the Beni River, Beni, Bolivia .

Taxonomy of O. mamoraeis poorly studied. Monotypic.

Distribution. N, C & E Bolivia and probably NW Paraguay; limits unresolved.

Descriptive notes. Head-body 120-170 mm, tail 144-180 mm, ear 17-20 mm, hindfoot 23-30 mm; weight 48-120 g. The Mamore Arboreal Rice Rat is characterized by large size, relatively long tail, and moderately long pelage (7-9 mm). Dorsum is generally medium buffy brown, dominated by gray hues in some specimens that range from gray to grayish buff; venter appears dull white from chin to inguinal areas in most specimens, although some have encroachment of gray-based hairs over mid-abdomen. Dorsal and ventral pelage tendsto be sharply demarcated, in most specimens accentuated by buff to bright ocherous lateral strip that demarcates upperparts from underparts. Tail is 115-118% of head-body length and brown to dusky brown for most ofits length; proximal section is slightly paler beneath; and short caudal hairs weakly obscure scale rows, without expression of terminal pencil.

Habitat. Humid lower and montane forest mostly at elevations of 200-500 m.

Food and Feeding. The Mamore Arboreal Rice Rat eats fruit and green seeds.

Breeding. No information.

Activity patterns. Mamore Arboreal Rice Rats are nocturnal and arboreal. They nest in tree holes, in dense masses of vines or epiphytes, and among palm leaves; they often invade houses in the forest and seem particularly fond of thatched roofs.

Movements, Home range and Social organization. Mamore Arboreal Rice Rats are solitary.

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

Bibliography. Carleton & Musser (2015), Carleton et al. (2009), Emmons (1997), Hershkovitz (1960), Pardinas, Teta et al. (2016), Thomas (1906d).

Figures

353. Bogota Grass Mouse (Neomicroxus bogotensts), 354. Ecuadorean Grass Mouse (Neomucroxus latebricola), 355. Altiplano Chinchilla Mouse (Chinchillula sahamae), 356. Small Red-nosed Tree Mouse (Juliomys pictipes), 357. Delicate Red-nosed Tree Mouse (Juliomys ossitenuis), 358. Montane Red-rumped Tree Mouse (Juliomys rimofrons), 359. Araucaria Forest Tree Mouse (Juliomys ximenezi), 360. Ruschi’s Spiny Mouse (Abrawayaomys ruschii), 361. Chebez’s Spiny Mouse (Abrawayaomys chebezi), 362. Montane Atlantic Forest Rat (Delomys altimontanus), 363. Pallid Atlantic Forest Rat (Delomys sublineatus), 364. Striped Atlantic Forest Rat (Delomys dorsalis), 365. North-western Conyrat (Reithrodon caurinus), 366. Naked-soled Conyrat (Reithrodon typicus), 367. Hairy-soled Conyrat (Reithrodon awritus), 368. Short-tailed Cane Mouse (Zygodontomys brevicauda), 369. Colombian Cane Mouse (Zygodontomys brunneus), 370. Ucayali South American Spiny Mouse (Scolomys ucayalensts), 371. Gray South American Spiny Mouse (Scolomys melanops), 372. Boquete Rice Rat (Nephelomys devius), 373. Santa Marta Rice Rat (Nephelomys maculiventer), 374. Mount Pirre Rice Rat (Nephelomys pirrensis), 375. Western Colombian Rice Rat (Nephelomys pectoralis), 376. Coastal Cordilleran Rice Rat (Nephelomys caracolus), 377. Merida Rice Rat (Nephelomys meridensis), 378. Child’s Rice Rat (Nephelomys childi), 379. White-throated Rice Rat (Nephelomys albigularis), 380. Greater Golden-bellied Rice Rat (Nephelomys aurirventer), 381. Gray-bellied Rice Rat (Nephelomys moerex), 382. Lesser Golden-bellied Rice Rat (Nephelomys nimbosus), 383. Keays’s Rice Rat (Nephelomys keaysi), 384. Nimble-footed Rice Rat (Nephelomys levipes), 385. Hammond's Rice Rat (Mindomys hammondi), 386. White-bellied Arboreal Rice Rat (Oecomys bicolor), 387. Yellow Arboreal Rice Rat (Oecomys flavicans), 388. Savanna Arboreal Rice Rat (Oecomys speciosus), 389. Long-furred Arboreal Rice Rat (Oecomys trinitatis), 390. Robert's Arboreal Rice Rat (Oecomys robert), 391. Unicolored Arboreal Rice Rat (Oecomys concolor), 392. Guianan Arboreal Rice Rat (Oecomys awyantepui), 393. King Arboreal Rice Rat (Oecomys rex), 394. Red Arboreal Rice Rat (Oecomys rutilus), 395. Brazilian Arboreal Rice Rat (Oecomys paricola), 396. Foothill Arboreal Rice Rat (Oecomys superans), 397. Dusky Arboreal Rice Rat (Oecomys phaeotis), 398. Mamore Arboreal Rice Rat (Oecomys mamorae), 399. Anderson’s Arboreal Rice Rat (Oecomys sydandersoni), 400. Franciscos’ Arboreal Rice Rat (Oecomys franciscorum), 401. Atlantic Forest Arboreal Rice Rat (Oecomys catherinae), 402. Cleber’s Arboreal Rice Rat (Oecomys cleber), 403. McConnell’s Rice Rat (Euryoryzomys macconnelli), 404. Emmons’s Rice Rat (Euryoryzomys emmonsae), 405. Big-headed Rice Rat (Euryoryzomys legatus), 406. Russet Rice Rat (Euryoryzomys russatus), 407. Bufty-sided Rice Rat (Euryoryzomys lamia), 408. Elegant Rice Rat (Euryoryzomys nitidus), 409. Long-whiskered Rice Rat (Transandinomys bolivaris), 410. Talamancan Rice Rat (Transandinomys talamancae), 411. Long-nosed Rice Rat “ Handleyomys (™ rostratus), 412. Chapman’s Rice Rat “ Handleyomys (” chapman), 413. Black-eared Rice Rat “ Handleyomys (™ melanotis), 414. Guerrero Rice Rat “ Handleyomys (™ guerrerensis), 415. Cloud Forest Rice Rat “ Handleyomys (” saturatior), 416. Highland Rice Rat “ Handleyomys (” rhabdops), 417. Alfaro’s Rice Rat “ Handleyomys (” alfaroi), 418. Colombian Western Andes Cloud Forest Mouse (Handleyomys fuscatus), 419. Colombian Central Andes Cloud Forest Mouse (Handleyomys intectus)

Distribution. N, C & E Bolivia and probably NW Paraguay; limits unresolved.