Black tamarin
| Black tamarin | ||||||||||||
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Black tamarin ( Saguinus ursula ) |
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| Saguinus ursula | ||||||||||||
| Hoffmannsegg , 1807 |
The Black Tamarin ( Saguinus ursula ) is a primate of the genus group of Tamarine , the family of the marmoset is counted (Callitrichidae) and in the northeastern Brazil between the Rio Tocantins and east of it, in the state of Maranhão , located transition zone between the Amazon rainforest and the Caatinga or the Cerrado occurs.
features
The black tamarin has a bare face that becomes black frontally and lighter to the side. The ears are also bare, black and as wide as they are long (about 28 × 30 mm). The body is covered with black, single-colored hair; only in the middle of the back from the shoulder blades to the base of the tail are the hairs black and gold striated across the way ("agouti hairs"). These hairs are 26 to 28 mm in length and are black at their base and top while the center (5 to 5.5 mm) is golden. The back hair is thick and looks disheveled. The neck, throat, chest and forelegs are covered with not densely standing black hair. The belly hair and the hair on the inside of the front and rear legs are blackish or brown-black. The tail is hairy and black.
Systematics
The black Tamarin 1807 together with the kind of the tamarins ( Saguinus ) by the German scientist Johann Centurius Hoffmannsegg described and is the type species of Saguinus . Later the species was synonymous with the black-hand tamarin ( Saguinus niger ) . In 2013, Saguinus ursula was finally revalidated again due to molecular data and differences in coat color.
Together with the closely related species, the Red-Handed Tamarin ( Saguinus midas ), which occurs in the three Guayanas and in the area between the Guayanas and the lower Amazon, and the Black- Handed Tamarin ( Saguinus niger ), which is distributed between the Rio Xingu and the Rio Tocantins the black tamarin is the midas species group within the genus Saguinus . Saguinus ursulus and S. niger arose in the course of an allopatric speciation , whereby the Tocantins caused a geographical isolation of the two species from each other.
literature
- Renato Gregorin, Mario De Vivo: Revalidation of Saguinus ursula Hoffmannsegg (Primates: Cebidae: Callitrichinae) . In: Zootaxa . tape 3721 , no. 2 , 2013, p. 172–182 , doi : 10.11646 / zootaxa.3721.2.4 ( online (PDF; 98.7 KB) [accessed October 25, 2013]).
- Johann Centurius von Hoffmannsegg: Description of four ape-like animals from Brazil . In: The Society of Friends of Natural Sciences in Berlin Magazine for the latest discoveries in all of natural history . tape 1 , no. 2 , 1807, pp. 83-104 ( online [accessed October 25, 2013]).