Back stripe shrew
| Back stripe shrew | ||||||||||||
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| Scientific name | ||||||||||||
| Sorex cylindricauda | ||||||||||||
| Milne-Edwards , 1872 |
The back striped shrew ( Sorex cylindricauda ) is a species of shrew from the genus of the red -toothed shrew ( Sorex ). It occurs in the People's Republic of China in several provinces of central China.
features
With a head-torso length of 6.7 to 7.7 centimeters, the back-striped shrew is one of the medium-sized shrew species. The tail reaches a length of 55 to 62 millimeters and is therefore almost as long or at least 80% only slightly shorter than the rest of the body. The rear foot from 15 to 16 millimeters. The back fur is dark cinnamon brown, the belly dark gray brown. On the back, a black band runs from the neck to the back of the torso along the spine . It is similar to S. caecutiens , but is slightly larger.
| 1 | · | 5 | · | 1 | · | 3 | = 32 |
| 1 | · | 1 | · | 1 | · | 3 |
The skull has a total length of 17 to 21 millimeters, the row of teeth of the upper jaw has a length of about 8.75 millimeters. As most species of the genus has the type in the maxilla per half an incisor (incisor) and then five unicuspid teeth, a Vorbackenzahn (premolar) and three molars (molar). In the lower jaw, however, it has a single canine behind the incisor. Overall, the animals have a set of 32 teeth. The tooth roots are colored red as in most red-toothed shrews. The first three single-pointed teeth of the upper jaw are about the same size, the fourth and fifth are smaller and gradually shrink or are also the same size. However, the fifth single-pointed tooth is larger in relation to the other teeth than in other types of Sorex .
distribution
The back-stripe shrew occurs in the People's Republic of China in the provinces of Yunnan , Gansu , Shaanxi , Ningxia and especially in Sichuan . The altitude distribution in Sichuan is up to 3000 meters.
Way of life
As is the case with many species of the genus, only little data is available on the way of life of this species. The habitat preferences of the back strip Shrew are unclear, especially through regular confusion with the sympatric living bedfordiae Sorex ; she probably prefers mountain forest areas, as these also surround the site of the type specimen .
Systematics
The back-striped shrew is classified as an independent species within the genus of the red -toothed shrew ( Sorex ), which consists of around 80 species. The first scientific description comes from Henri Milne-Edwards from 1872, who described an individual from the Baoxing region , Sichuan province . Within the genus, the species is classified in the subgenus Sorex .
Apart from the nominate form Sorex cylindricauda cylindricauda, no further subspecies are distinguished within the species .
Threat and protection
The International Union for Conservation of Nature and Natural Resources (IUCN) classifies the dorsal shrew as not endangered (least concern) due to the large population, the occurrence in several protected areas and the lack of potential threat to the population. Until 1996, however, the species was listed as endangered.
literature
- Robert S. Hoffmann, Darrin Lunde: Stripe-Backed Shrew. In: Andrew T. Smith , Yan Xie: A Guide to the Mammals of China. Princeton University Press, Princeton NJ 2008, ISBN 978-0-691-09984-2 , pp. 315-316.
Web links
- Sorex cylindricauda inthe IUCN 2013 Red List of Threatened Species . Listed by: AT Smith, CH Johnston, 2008. Retrieved January 2, 2014.
supporting documents
- ↑ a b c d e Robert S. Hoffmann, Darrin Lunde: Stripe-Backed Shrew. In: Andrew T. Smith , Yan Xie: A Guide to the Mammals of China. Princeton University Press, Princeton NJ 2008, ISBN 978-0-691-09984-2 , pp. 315-316.
- ↑ a b c Sorex cylindricauda in the Red List of Threatened Species of the IUCN 2013.2. Listed by: AT Smith, CH Johnston, 2008. Retrieved January 2, 2014.
- ↑ a b c d Sorex cylindricauda ( Memento of the original from January 2, 2014 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 .
