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Jalapan Vole

Microtus quasiater
NT · Near threatened Rodentia Cricetidae
Jalapan Vole (Microtus quasiater)
Photo: © Jose Manuel Ramos Martinez, some rights reserved (CC BY)
Size
10-12 cm + tail 2-3 cm
Weight
30-45 g
Activity
Variable (day and night)
Sociability
Solitary

Description

A vole with almost entirely subterranean habits, far more fossorial than most of its relatives in the genus, with a compact body and small eyes and ears that reflect a life spent largely underground or beneath a dense layer of vegetation. It lives in the pine and mountain cloud forests of a strip of eastern Mexico, near the city of Xalapa which gives the Jalapan Vole its common name. Like other voles, it feeds almost exclusively on plant material, and its continuous digging activity helps to aerate the forest soil. It is one of several vole species endemic to the Mexican mountains whose detailed biology remains poorly known despite being described over a century ago.

How to identify it

A small, highly compact rodent with a cylindrical body, very short tail, small eyes and ears owing to its more fossorial habits than other voles, and dark brown fur. It differs from other voles in the region by this appearance more adapted to life underground, with proportionally smaller ears and eyes.

Signs and tracks

Tiny track, barely 1-1.5 cm, showing 4 foretoes and 5 hind toes, rarely visible given its more subterranean habits than other voles. Small, cylindrical droppings 4-6 mm long, deposited inside its system of shallow galleries and rarely seen on the surface. It digs a network of shallow tunnels beneath the leaf litter and dense vegetation of the pine and cloud forest, with occasional small surface openings semi-hidden among the vegetation.

Habitat and range

Pine forest and mountain cloud forest with soft soil and abundant leaf litter, generally between 1500 and 3000 m altitude. Distributed across a strip of mountains in eastern Mexico, in the states of Veracruz, Puebla and Hidalgo.

Diet

Herbivorous, feeding on roots, tender stems, grass and seeds from the mountain forest floor.

Behaviour

More fossorial than most voles, it digs a network of shallow tunnels beneath the leaf litter and is solitary and territorial outside the breeding season.

Conservation

Its populations are generally considered stable across much of its range, although declining locally due to the loss of pine and cloud forest in parts of the mountains of eastern Mexico.

Threats

Deforestation and fragmentation of pine and cloud forest caused by logging and land-use changes in the mountains of Veracruz, Puebla and Hidalgo.

Other accounts in Cricetidae

See all species accounts for rodents · Full species index

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