Santander miniature squirrel
| Santander miniature squirrel | ||||||||||||
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| Microsciurus santanderensis | ||||||||||||
| ( Hernandez-Camacho , 1957) |
The Santander dwarf squirrel ( Microsciurus santanderensis ) is a species of squirrel from the genus of the New World dwarf squirrel ( Microsciurus ). It is endemic to Colombia .
features
The Santander dwarf squirrel reaches a total length of about 27.2 to 30.8 centimeters. The tail becomes 13.6 to 15.2 inches long. The back fur of the animals is dark brown, the belly is gray to gray-brown.
| 1 | · | 0 | · | 2 | · | 3 | = 22 |
| 1 | · | 0 | · | 1 | · | 3 |
The animals have as other species of the genus in the upper jaw half per one to a incisor tooth formed incisor (incisor) to which a tooth gap ( diastema follows). This is followed by two premolars and three molars . In contrast, the animals have only one premolar in the lower jaw. In total, the animals have a set of 22 teeth. The second premolar (PM3) is absent especially in some populations of the Amazonian dwarf squirrel ( Microsciurus flaviventer ), in the other species it is very small.
distribution
The Santander dwarf squirrel is endemic to Colombia , where it is found exclusively in the Departamento de Santander and probably also in the surrounding departments between the Río Magdalena and the Cordillera Oriental, the eastern chain of the Andes to the Cordillera Occidental in the west. The altitude distribution ranges from 100 to 1000 meters, but the animals were also found at altitudes of 2700 to 3800 meters.
Way of life
The Santander dwarf squirrel lives in mountain forests and in swamp areas of the range. Very little is known about the way of life. It is diurnal and likely feeds on insects and other invertebrates.
Systematics
The Santander dwarf squirrel is classified as an independent species within the genus of the New World dwarf squirrel ( Microsciurus ), which consists of four species. The first scientific description comes from Hernandez-Camacho from 1957, who described the species as a subspecies of the Colombian squirrel as Sciurus pucheranii santanderensis based on individuals from the Meseta de los Caballeros northeast of La Albania in the Department of Santander . In 1960, Hernandez-Camacho classified the species under the genus Microsciurus .
Apart from the nominate form, no further subspecies are distinguished within the species .
Status, threat and protection
The Santander dwarf squirrel is classified by the International Union for Conservation of Nature and Natural Resources (IUCN) as “data deficient” due to insufficient data on the stocks.
supporting documents
- ↑ a b c d e Richard W. Thorington Jr. , John L. Koprowski, Michael A. Steele: Squirrels of the World. Johns Hopkins University Press, Baltimore MD 2012, ISBN 978-1-4214-0469-1 , pp. 35-36 .
- ↑ James L. Patton, Ulyses FJ Pardiñas, Guillermo D'Elía: Mammals of South America, Volume 2: Rodents. University of Chicago Press, 2015; P. 24 ff. ( Google Books )
- ↑ a b Microsciurus santanderensis in the IUCN Red List of Threatened Species 2015.1. Posted by: J. Koprowski, L. Roth, 2008. Retrieved July 10, 2015.
- ↑ a b Microsciurus santanderensis In: Don E. Wilson , DeeAnn M. Reeder (Ed.): Mammal Species of the World. A taxonomic and geographic Reference. 2 volumes. 3. Edition. Johns Hopkins University Press, Baltimore MD 2005, ISBN 0-8018-8221-4 .
- ↑ a b James L. Patton, Ulyses FJ Pardiñas, Guillermo D'Elía: Mammals of South America, Volume 2: Rodents. University of Chicago Press, 2015; P. 30. ( Google Books )
literature
- Richard W. Thorington Jr. , John L. Koprowski, Michael A. Steele: Squirrels of the World. Johns Hopkins University Press, Baltimore MD 2012, ISBN 978-1-4214-0469-1 , pp. 35-36 .
- James L. Patton, Ulyses FJ Pardiñas, Guillermo D'Elía: Mammals of South America, Volume 2: Rodents. University of Chicago Press, 2015; P. 30. ( Google Books )
- Sarah L Hale; Vicki L Greer; John L Koprowski; Nicolás Ramos-Lara: Microsciurus santanderensis (Rodentia: Sciuridae). Mammalian Species 50 (970), Oct 25, 2018; Pp. 166-169. doi : 10.1093 / mspecies / sey017
Web links
- Microsciurus santanderensis inthe IUCN Red List of Threatened Species 2015.1. Posted by: J. Koprowski, L. Roth, 2008. Retrieved July 10, 2015.