Hatt's vesper rat

Description

Hatt's vesper rat has a typical rat-like appearance, and closely resembles the related Sumichrast's vesper rat, from which it can most easily be distinguished by its much larger auditory bullae. It is relatively small for a rat, both sexes having a head body length of 9 to, and a long, 6 to, tail. Adults weigh from 23 to.

The rat is brightly coloured, with bright russet or yellowish fur over most of the body, and creamy or white underparts. The face has a short, rounded snout, and conspicuous black markings in front of the eyes, stretching as far as the whiskers. Younger individuals tend to be duller in colour, and have less glossy fur than the adults. The tail is thickly covered with brown fur along its entire length, although the ears are largely hairless. Females have four abdominal teats.

Distribution and habitat

Hatt's vesper rat is found throughout the Yucatán Peninsula, in the Mexican states of Campeche, Yucatán, and Quintana Roo, and in northern Guatemala and Belize. It inhabits broadleaf tropical forests close to water and below about 250 m elevation. It has generally been recorded in trees or lianas, on fallen wood, or even in the rafters of houses, and may be largely arboreal in its habits.

Biology

The rat is little studied, and, as of 2008, was known only from eighteen specimens. but is considered of least concern by the IUCN because of its apparently wide distribution and adaptability. Fossil specimens have been discovered dating back to the Pleistocene.

References

References

1. (2016). "''Otonyctomys hatti''".
2. (2019). "Mammal Diversity Database". American Society of Mammalologists.
3. {{MSW3 Muroidea
4. MacSwiney, M.C.. (2009). "''Otonyctomys hatti'' (Rodentia: Cricetidae)". Mammalian Species.
5. SecretarÍa de Medio Ambiente. "Protección ambiental—especies nativas de México de flora y fauna silvestres—categoría de riesgo y especificaciones para su inclusión, exclusión o cambio—lista de especies en riesgo".