656.

Reddish-nosed Oldfield Mouse

Thomasomys rosalinda

French: Thomasomys de Goncha / German: Rotnasen-Paramomaus / Spanish: Raton de erial de hocico rojizo

Other common names: Reddish-nosed Thomasomys, Rosalinda’s Oldfield Mouse, Rosalinda’s Thomasomys

Taxonomy. Thomasomys rosalinda Thomas & St. Leger, 1926, Goncha, 2591 m, Amazonas, Peru.

This species is monotypic.

Distribution. Known only from the type locality in N Peru.

Descriptive notes. Head-body 135 mm, tail 170 mm, ear 20-5 mm, hindfoot 27-5 mm. No specific data are available for body weight. The Reddish-nosed Oldfield Mouse is the smallest member of the aureus species group. Dorsum is reddish gray overall, more grayish on head, foreback, and cheeks, and smoothly more rufous on posterior back, rump, and hindlimbs. Venter is tawny cinnamon, paler on chin, throat, and inner sides of forelimbs, with indistinct rufous patch on chest, and more rufous on inner sides of hindlimbs and inguinal region. Fur is moderately long (12 mm). Nose is reddish gray, contrasting with dark spot at bases of mystacial vibrissae. Mystacial vibrissae are moderately long, extending slightly beyond posterior margin of pinnae when bent. Ears are brown and covered with long hair. Tail is moderately long (c.126% of head-body length) and unicolored. Hallux is long, extending to interphalangeal joint of second digit. Fifth digit of pes is very long, with claw extending to base of claw of fourth digit.

Habitat. Montane forests. Type specimen of the Reddish-nosed Oldfield Mouse was trapped in wet brush.

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 Data Deficient on The IUCN Red List. Information on status and natural history of the Reddish-nosed Oldfield Mouse is lacking, and it is not found in any protected areas. It is one of the most poorly known species of Thomasomys .

Bibliography. Ellerman (1941), Musser & Carleton (2005), Pacheco (2003, 2015b), Pacheco & Vargas (20089), Pacheco et al. (2009), Thomas & St. Leger (1926a).