711.

Bolivian Vesper Mouse

Calomys boliviae

French: Calomys de Bolivie / German: Bolivien-Vespermaus / Spanish: Raton laucha de Bolivia

Other common names: Bolivian Laucha

Taxonomy. Eligmodontia callosa boliviae Thomas, 1901, Solocame River, 1200 m, La Paz, Bolivia .

This species is monotypic.

Distribution. E Andean slopes from WC Bolivia to NW Argentina .

Descriptive notes. Head-body 93-121 mm, tail 52-100 mm, ear 18-19 mm, hindfoot 19-22 mm; weight 60-85 g. Dorsum of the Bolivian Vesper Mouse is grayish, washed with dull yellow turning richer toward rump; buffy sides are indistinctly separated from venter by buffy line. Venter is uniformly pale buff, and bases of hairs are slate. Face is back, but cheeks are paler, similar to sides. Ears are thinly haired, and overall same color as head; whitish postauricular patches are inconspicuous; and there are no preauricular ear patches. Arms and legs are grayish white; hands and feet are clear buffy white. Tail is finely haired and bicolored, brown above and whiter below. Hindfeet are short and narrow, and except for heel, plantar surfaces are naked.

Habitat. Humid Puna, Yungas, and Chaco at elevations of 600-2700 m.

Food and Feeding. The Bolivian Vesper Mouse is granivorous.

Breeding. Pregnant or lactating Bolivian Vesper Mice were caught in February; scrotal males were caught in February-May.

Activity patterns. The Bolivian Vesper Mouse is diurnal and crepuscular.

Movements, Home range and Social organization. No information.

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

Bibliography. Anderson (1997), Bernal, Vivar et al. (2016), Olds (1988), Patterson (1992b), Salazar-Bravo (2015c).