Marmosa rapposa

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Marmosa rapposa
The holotype of Marmosa rapposa, an ancient female animal, kept in the Natural History Museum in London.

The holotype of Marmosa rapposa , an ancient female animal, kept in the Natural History Museum in London .

Systematics
Class : Mammals (mammalia)
Subclass : Marsupials (Marsupialia)
Order : Opossum-like (Didelphimorphia)
Family : Opossum rats (Didelphidae)
Genre : Dwarf pouch rats ( Marmosa )
Type : Marmosa rapposa
Scientific name
Marmosa rapposa
Thomas , 1899

Marmosa rapposa is a species of mammal from the genus of the pygmy sac rats , which grows at altitudes of 1000 to 2500 meters in the cloud forests of the eastern slopes of the Andes from the Peruvian region Junín in the north over the Bolivian Yungas to northeast Argentina, as well as in the east bordering Cerradoregion , in the center Brazil, eastern Bolivia and eastern Paraguay .

features

The animals are similar to the white-bellied woolly dwarf rat ( Marmosa constantiae ), but in contrast to this species they have a yellow, mustard-colored or ocher-colored belly and a white tip of the tail (dark in M. constantiae ). The hair on the base of the tail is short (long in M. constantiae ). The fur of Marmosa rapposa is long and frizzy with rather upright hair. The back is colored gray-brown. The skull is relatively large and stable. In contrast to the skull of the white-bellied woolly dwarf rat, the palatine bone of Marmosa rapposa has small openings.

Systematics

Marmosa rapposa was first scientifically described in 1899 by the British zoologist Oldfield Thomas , but was later synonymous with Alston's woolly dwarf bag rat ( Marmosa alstoni ) . In a survey of the opossum fauna in the area of Rio Javari and Río Ucayali in eastern Peru published in mid-2019 by the opossum expert Robert Voss and colleagues, the species is revalidated again.

Individual evidence

  1. ^ A b c d 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 , pp. 29-30.
  2. ^ A b George Henry Hamilton Tate : A systematic revision of the Marsupial Genus Marmosa. Bulletin of the American Museum of Natural History, Volume LXVI, 1933, pp. 77-79.