Tlacuatzin
| Grayish mouse opossum | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Infraclass: | Marsupialia |
| Order: | Didelphimorphia |
| Family: | Didelphidae |
| Genus: |
Tlacuatzin Voss and Jansa, 2003 |
| Species: | T. canescens |
| Binomial name | |
|
Tlacuatzin canescens (J. A. Allen, 1893) |
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| Grayish mouse opossum range | |
| Synonyms | |
|
Marmosa canescens |
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Marmosa canescens
The grayish mouse opossum (Tlacuatzin canescens) is a species of opossum endemic to Mexico. It is the sole species in the genus Tlacuatzin.
The grayish mouse opossum is an unusually small opossum, measuring 20 to 35 cm (7.9 to 13.8 in) in total length, including an 11- to 16-cm (4.3- to 6.3-in) tail. Adults weigh from 38 to 60 g (1.3 to 2.1 oz). The body is covered in short, soft fur, with a slightly woolly texture. As the common name suggests, the fur is pale to brownish grey in colour, fading to white or near-white on the under parts and legs. In addition, clearly visible rings of black hair occur around the eyes, and, on females, patches of orange fur in the groin region, sometimes extending to the thighs and up the midline almost to the throat.
The whiskers are relatively short, and the ears are rounded, hairless, and dark in colour. The tail is long and prehensile, and hairless for almost all of its length, apart from the base. Females have nine teats, but, unlike many other marsupials, do not have a pouch.
It is endemic to Mexico from southern Sonora to Oaxaca, with populations also on the Islas Marías and in the central Yucatán Peninsula. It occupies seasonally arid habitats, especially mixed deciduous forests, but also scrub, grassland, and agricultural land. It has been reported up to elevations of 2,100 m (6,900 ft), although it is more commonly found below 1,000 m (3,300 ft). Two subspecies are currently recognised:
The grayish mouse opossum is solitary and semiarboreal, being more terrestrial in its habits than other mouse opossums. They have been reported to travel no more than 72 m (236 ft) between feeding sites, suggesting a small home range. Population densities have been reported to range from 0.4 to 4.5 per hectare (0.16 to 1.82/acre). The species has an omnivorous diet, but feeds mainly on insects such as bugs, cockroaches, moths, and beetles. It occasionally feeds on small lizards and bird eggs, and also feeds on fruit such as figs, coconuts, and oranges. Predators include barn owls and pumas.
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Wikipedia