White-bellied woolly dwarf pouch rat
| White-bellied woolly dwarf pouch rat | ||||||||||||
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| Marmosa constantiae | ||||||||||||
| Thomas , 1904 |
The white-bellied woolly dwarf pouch rat ( Marmosa constantiae , synonym : M. demerarae ), also known as the white-bellied dwarf pouch rat , is a species of mammal belonging to the genus of dwarf pouch rats that grows in the Bolivian lowlands , in the Brazilian states of Rondônia , Mato Grosso and Mato Grosso do Sul , im occurs in north-western Argentina ( Jujuy and Salta provinces ) and in Paraguay . According to Voss and colleagues, the distribution area extends in the southern Amazon basin to the western bank of the Rio Tapajós .
features
The animals are relatively large dwarf sac rats. Males of the white-bellied woolly dwarf pouch rat reach a head body length of 15.9 to 20.3 cm, and have a 21.8 to 28.9 cm long tail, 26 to 32 mm long hind feet and 24 to 30 mm long ears. Their weight is between 78 and 185 g. Females are significantly smaller with head rump lengths of 13.8 to 17.5 cm, 18.6 to 25 cm long tails and weights of 50 to 142 g. Their hind feet are 20 to 30 mm long and their ears 23 to 29 mm. The fur is long and woolly. The back is gray with a light brownish or yellowish tinge. The fur is lighter on the sides of the body. The eyes are surrounded by dark brown or black rings. The fur between the eyes is yellow. The underside is creamy white from chin to anus, sometimes with a pink or yellowish tinge. The ears are dark brown. Females have 15 teats, one in the middle and seven on each side, but no pouch.
Way of life
White-bellied dwarf sac rats occur in more or less moist forests, but prefer the drier regions within these forests. The animals are apparently strictly arboreal (tree-dwelling). One has never been caught in a trap on the ground. Nothing more is known about their diet, activity patterns and reproduction. Plant matter and insects were found in the stomach of a specimen caught in Jujuy, and a female with five young was caught in Bolivia in August.
Danger
According to the IUCN , the population of the white-bellied dwarf pouch rat is not endangered. It is widespread and is also found in several protected areas. However, the habitat is now very fragmented and the threat situation could change relatively quickly.
Individual evidence
- ↑ a b c d Diego Astúa: Family Didelphidae (Opossums). in Don E. Wilson , Russell A. Mittermeier : Handbook of the Mammals of the World - Volume 5. Monotremes and Marsupials. Lynx Editions, 2015, ISBN 978-84-96553-99-6 . Page 141.
- ^ A b Robert S. Voss, David W. Fleck and Sharon A. Jansa: Mammalian Diversity and Matses Ethnomammalogy in Amazonian Peru Part 3: Marsupials (Didelphimorphia). Bulletin of the American Museum of Natural History, 2019 (432): 1-90. doi: 10.1206 / 0003-0090.432.1.1 , pages 27-30.
- ↑ Marmosa CONSTANTIAE in the Red List of Threatened Species of the IUCN 2016. Posted by: Tarifa, T. & Martin, GM, 2016. Retrieved on June 29 of 2019.