Delacour climbing rat
| Delacour climbing rat | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Delacour climbing rat ( Hapalomys delacouri ) |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Hapalomys delacouri | ||||||||||||
| Thomas , 1927 |
The Delacour climbing rat ( Hapalomys delacouri ) is a species of mammal from the genus of the Asian climbing rats ( Hapalomys ) within the rodents (Rodentia). It is widespread from the extreme south of the People's Republic of China to the north of Vietnam and Laos .
features
The Delacour climbing rat reaches a head-trunk length of 12.3 to 13.6 centimeters and a tail length of 14.0 to 16.0 centimeters. The rear foot length is 22 to 24 millimeters and the ear length is 14 to 15 millimeters. The back fur is ocher-brown with long, soft hair. The belly side is white and sharply demarcated from the dorsal fur. The tail is a little longer than the rest of the body length, it is pale brown at the base and becomes darker brown towards the end. It ends in a short tuft of hair about 6 millimeters long. The edge of the ears is covered with fringed, long hair that can be twice the length of the auricle. The vibrissae are also long and reach back to the shoulder. The front and rear feet are long and wide, the thumb can be opposed and has a nail instead of a claw. The females have four pairs of teats , one pair each on the chest and one on the belly and two pairs in the groin area .
The skull has a total length of 32 to 34 millimeters. It has a short, wide rostrum and a large, square-looking skull with distinct supraorbital ridges. The first molar in each case in the upper and lower jaw has three rows of three tips each, which are almost symmetrical from beginning to end.
distribution
The Delacour climbing rat is common from the extreme south of the People's Republic of China in southern Yunnan , Guangxi and on the island of Hainan to northern Vietnam and Laos .
Way of life
Information about the way of life of the species is rare. It is nocturnal and tree-living and is likely tied to bamboo stocks between 1200 and 1500.
Systematics
The Delacour climbing rat is classified as an independent species within the Asian climbing rats (genus Hapalomys ), which consists of two species. The first scientific description was made by Oldfield Thomas in 1927, who described the species using individuals from Dakto in southern Vietnam.
In addition to the nominate form Hapalomys delacouri delacouri , Smith & Yan Xie 2009 distinguish for China another subspecies Hapalomys delacouri marmosa , which is endemic to the island of Hainan .
Hazard and protection
The species is listed as endangered (vulnerable) by the International Union for Conservation of Nature and Natural Resources (IUCN). This is justified by the assumed strong decline in stocks, which are estimated at more than 30% over a period of 10 years. This is caused by the loss of habitat associated with the decline in the bamboo forests.
supporting documents
- ↑ a b c d e f Lesser Marmoset Council. In: Andrew T. Smith, Yan Xie: A Guide to the Mammals of China. 2008, p. 261.
- ↑ a b Hadromys yunnanensis in the IUCN 2015-4 Red List of Threatened Species . Listed by: AT Smith, CH Johnston, 2008. Retrieved December 20, 2015.
- ↑ a b Hapalomys delacouri ( Memento of the original dated December 22, 2015 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. . In: Don E. Wilson , DeeAnn M. Reeder (Eds.): 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 .
literature
- Lesser marmoset advice. In: Andrew T. Smith, Yan Xie: A Guide to the Mammals of China. 2008, p. 261.
Web links
- Hapalomys delacouri inthe IUCN Red List of Threatened Species 2015-4. Posted by: D. Lunde, K. Aplin, 2008. Retrieved December 21, 2015.