Thomasomys eleusis (Thomas, 1926)

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 : 499

654.

Peruvian Oldfield Mouse

Thomasomys eleusis

French: Thomasomys du Pérou / German: Peru-Paramomaus / Spanish: Raton de erial de Peru

Other common names: Peruvian Thomasomys

Taxonomy. Thomasomys ischyrus eleusis Thomas, 1926 , “Tambo Jenes, 12,000’ [= 3658 m],” Amazonas, Peru .

This species is monotypic.

Distribution. E Andes Range of N Peru.

Descriptive notes. Head-body 126-140 mm, tail 123-148 mm, ear 21 mm, hindfoot 28-32 mm. No specific data are available for body weight. Fur of the Peruvian Oldfield Mouse is long, soft, and dense. Dorsum is dark gray, with slight tinge of brownish on sides. Venter is paler gray, with buffy overtone; hairs are slatecolored at bases, with tips dull whitish or slightly buffy, and moderately countershaded relative to dorsal pelage. Mystacial vibrissae are moderately long, extending slightly beyond posterior margin of pinnae when bent. Grayish white spot at base of each ear is usually evident. Tail is 93-112% of head-body length, comparatively thick, and indistinctly bicolored, lacking terminal white tip. Hindfoot is moderately long; metacarpals and digits are covered with pure white, shiny hairs. Hallux is moderately long.

Habitat. Variety of habitats ranging from Puna grassland, bare or shrub rocky places, and shrubby places bordering streams to borders of continuous humid montane forests at elevations of 3050-3660 m.

Food and Feeding. No information.

Breeding. No information.

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. Cassola (2016r), Leo & Romo (1992), Musser & Carleton (2005), Osgood (1914b), Pacheco (2003, 2015b), Pacheco, Cadenillas et al. (2009), Pacheco, Salas et al. (2013), Thomas (1926c¢).

Figures

622. Unicolored Oldfield Mouse (Thomasomys monochromos), 623. Venezuelan Oldfield Mouse (Thomasomys emeritus), 624. Dressy Oldfield Mouse (Thomasomys vestitus), 625. Woodland Oldfield Mouse (Thomasomys hylophilus), 626. Niceforo Maria’s Oldfield Mouse (Thomasomys nicefor), 627. Popayan Oldfield Mouse (Thomasomys popayanus), 628. Shortfaced Oldfield Mouse (Thomasomys baeops), 629. Snow-footed Oldfield Mouse (Thomasomys niveipes), 630. Principal Oldfield Mouse (Thomasomys princeps), 631. Silky Oldfield Mouse (Thomasomys bombycinus), 632. Red Andean Oldfield Mouse (Thomasomys auricularis), 633. Cinnamon-colored Oldfield Mouse (Thomasomys cinnameus), 634. Central Andes Oldfield Mouse (Thomasomys contradictus), 635. Ashy-bellied Oldfield Mouse (Thomasomys cinererventer), 636. Colombian Oldfield Mouse (Thomasomys dispar), 637. Soft-furred Oldfield Mouse (Thomasomys laniger), 638. Ash-colored Oldfield Mouse (Thomasomys cinereus), 639. Wandering Oldfield Mouse (Thomasomys erro), 640. Paramo Oldfield Mouse (Thomasomys paramorum), 641. Forest Oldfield Mouse (Thomasomys silvestris), 642. Smoky Oldfield Mouse (Thomasomys fumeus), 643. Pichincha Oldfield Mouse (Thomasomys vulcani), 644. Ucucha Oldfield Mouse (Thomasomys ucucha), 645. Taczanowski’s Oldfield Mouse (Thomasomys taczanowsku), 646. Golden Oldfield Mouse (Thomasomys aureus), 647. White-tipped Oldfield Mouse (Thomasomys caudivarius), 648. Hudson's Oldfield Mouse (Thomasomys hudsoni), 649. Reddish-backed Oldfield Mouse (Thomasomys pyrrhonotus), 650. Montane Oldfield Mouse (Thomasomys oreas), 651. Cajamarca Oldfield Mouse (Thomasomys praetor), 652. Distinguished Oldfield Mouse (Thomasomys notatus), 653. Apeco Oldfield Mouse (Thomasomys apeco), 654. Peruvian Oldfield Mouse (Thomasomys eleusis), 655. Strong-tailed Oldfield Mouse (Thomasomys ischyrus), 656. Reddish-nosed Oldfield Mouse (Thomasomys rosalinda), 657. Large-eared Oldfield Mouse (Thomasomys macrotis), 658. Ashaninka Oldfield Mouse (Thomasomys onkiro), 659. Inca Oldfield Mouse (Thomasomys incanus), 660. Kalinowski’s Oldfield Mouse (Thomasomys kalinowskii), 661. Slender Oldfield Mouse (Thomasomys gracilis), 662. Daphne’s Oldfield Mouse (Thomasomys daphne), 663. Anderson’s Oldfield Mouse (Thomasomys andersoni), 664. Austral Oldfield Mouse (Thomasomys australis), 665. Ladew’s Oldfield Mouse (Thomasomys ladewi)

Distribution. E Andes Range of N Peru.