Phaenomys ferrugineus (Thomas, 1894)

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 : 507

677.

Rio de Janeiro Arboreal Rat

Phaenomys ferrugineus

French: Phaenomys ferrugineux / German: Rio-de-Janeiro-Ratte / Spanish: Rata arboricola de Rio de Janeiro

Other common names: Rusty Phaenomys

Taxonomy. Oryzomys ferrugineus Thomas, 1894 , “Rio [de] Janeiro,” Rio de Janeiro State, Brazil.

Phaenomys ferrugineus is the type species of the genus. Monotypic.

Distribution. Known from a handful of localities in SE Brazil (Minas Gerais, Rio de Janeiro, and Sao Paulo states).

Descriptive notes. Head-body 143-170 mm, tail 187-199 mm, ear 20 mm, hindfoot 31 mm; weight 50-75 g. The Rio de Janeiro Arboreal Rat has moderately large, long, dark brown, and slightly hairy tail, with inconspicuous hair pencil at tip. Dorsal pelage is dense and long, varying from rufous to rust orange; venter is pure white or white washed with buff or rufous. Ears are brownish, covered by rusty hairs. Mystacial vibrissae are thick and long, extending beyond ears. Hindfeet are covered in metatarsal region by yellowish to pale rusty hairs, with proximal part of hindfeet rust and distal part dirty white. Chromosomal complement is 2n = 78, FN = 114.

Habitat. Montane Atlantic Forest at elevations of 900-1550 m.

Food and Feeding. No information.

Breeding. No information.

Activity patterns. The Rio deJaneiro Arboreal Ratis nocturnal. Usually reported as arboreal, but two individuals were recently trapped on the ground in herbaceous vegetation.

Movements, Home range and Social organization. No information.

Status and Conservation. Classified as Vulnerable on The IUCNRed List. The Rio deJaneiro Arboreal Rat occurs in only 12,000 km? and is known from fewer than ten locations. Extent and quality of its habitat continue to decline.

Bibliography. Bonvicino & Percequillo (2008), Bonvicino et al. (2001), Pardinas, D'Elia et al. (2014), Passamani et al. (2011), Percequillo (2015a), Thomas (1894), Vaz (2000).

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[MISSING], 648. [MISSING], 649. [MISSING], 650. [MISSING], 651. [MISSING], 652. [MISSING], 653. [MISSING], 654. [MISSING], 655. [MISSING], 656. [MISSING], 657. [MISSING], 658. [MISSING], 659. [MISSING], 660. [MISSING], 661. [MISSING], 662. [MISSING], 663. [MISSING], 664. [MISSING], 666. Western Puna Mouse (Punomys lemminus), 667. Koford’s Puna Mouse (Punomys kofordi), 668. Andean Mouse (Andinomys edax), 669. Andean Swamp Rat (Neotomys ebriosus), 670. Salta Chinchilla Rat (Euneomys fossor), 671. Biting Chinchilla Rat (Euneomys mordax), 672. Peterson’s Chinchilla Rat (Funeomys petersoni), 673. Patagonian Chinchilla Rat (Funeomys chinchilloides), 674. Chilean Climbing Mouse (Irenomys tarsalis), 675. Cerrado Red-nosed Mouse (Wiedomys cerradensis), 676. Common Red-nosed Mouse (Wiedomys pyrrhorinos), 677. Rio de Janeiro Arboreal Rat (Phaenomys ferrugineus), 678. Red-nosed Tree Mouse (Wilfredomys oenax), 679. Andean Long-clawed Mouse (Paynomys macronyx), 680. Chilean Long-clawed Mouse (Chelemys megalonyx), 681. Edwards’s Long-clawed Mouse (Notiomys edwards), 682. Valdivian Long-clawed Mouse (Geoxus valdivianus), 683. Large Long-clawed Mouse (Geoxus annectens), 684. Guafo Island Long-clawed Mouse (Geoxus lafkenche), 685. Michaelsen’s Long-clawed Mouse (Geoxus michaelseni), 686. LLong-haired Soft-haired Mouse (Abrothrix longipilis), 687. Hairy Soft-haired Mouse (Abrothrix hirta), 689. Sanborn’s Soft-haired Mouse (Abrothrix sanborni), 690. Woolly Soft-haired Mouse (Abrothrix lanosa), 691. Ornate Soft-haired Mouse (Abrothrix jelskii), 692. Gray Soft-haired Mouse (Abrothrix illutea), 694. Olive Soft-haired Mouse (Abrothrix olivacea)

Distribution. Known from a handful of localities in SE Brazil (Minas Gerais, Rio de Janeiro, and Sao Paulo states).