Oecomys sydandersoni, Carleton, Emmons & Musser, 2009

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

399.

Anderson’s Arboreal Rice Rat

Oecomys sydandersoni

French: Oecomys d’Anderson / German: Anderson-Baumreisratte / Spanish: Rata arrocera arboricola de Anderson

Other common names: Anderson's Oecomys

Taxonomy. Oecomys sydandersoni Carleton, Emmons & Musser, 2009 , “ Bolivia, Departamento de Santa Cruz, Provincia Velasco, El Refugio Huanchaca [= biological station in Parque Nacional Noel Kempff Mercado ], 210 m; 14°46’01”S/61°02°02"W.” This species is monotypic.

Distribution. Extreme NE Bolivia (Beni and Santa Cruz departments).

Descriptive notes. Head-body 109-166 mm, tail 115-145 mm, ear 15-19 mm, hindfoot 21-27 mm; weight 30-57 g. Anderson’s Arboreal Rice Rat is medium-sized, with soft, fine, and moderately short (¢.5-7 mm over mid-rump) fur. Dorsum is ocherous brown to pale tawny, generally bright in tone with more grayish showing on head and flanks; venter is pale to medium gray, with hairs of chin, throat, and inguinal area entirely white to base in most specimens; and dorsal and ventral transition is moderately defined but without ocherouslateral line. Tail is ¢.106% of head-body length, brown to dark brown all around for most of its length; short caudal hairs are scarcely visible to unaided eye, revealing fine scale pattern, and end in rudimentary pencil at tip.

Habitat. Almost exclusively open savanna with a mosaic of tall grasses—deeply flooded by standing water during wet season (December-March)—and smaller clumps of woody vegetation with tall trees and many woody vines. Anderson’s Arboreal Rice Rat specially occupies woody islands in these habitats.

Food and Feeding. No information.

Breeding. No information.

Activity patterns. Anderson’s Arboreal Rice Rats were trapped aboveground and up to 2-5 m high, suggesting they are arboreal.

Movements, Home range and Social organization. No information.

Status and Conservation. Not assessed on The IUCN Red List.

Bibliography. Carleton & Musser (2015), Carleton et al. (2009), Emmons et al. (2006).

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. Extreme NE Bolivia (Beni and Santa Cruz departments).