| Pseudagkistrodon | |
|---|---|
| |
| from Taiwan | |
| Conservation status | |
 Least Concern (IUCN 3.1) | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Suborder: | Serpentes |
| Family: | Colubridae |
| Genus: | Pseudagkistrodon Van Denburgh, 1909 |
| Species: | P. rudis |
| Binomial name | |
| Pseudagkistrodon rudis (Boulenger, 1906) | |
| Synonyms | |
| |
Pseudagkistrodon is a monotypic genus of snakes in the family Colubridae. The sole species is Pseudagkistrodon rudis, also known as red keelback, false habu, and false viper. It is found in southwest, south, and east China and in Taiwan. One subspecies, Pseudagkistrodon rudis multiprefrontalis Zhao and Jiang 1981 from Sichuan, is recognized, in addition to the nominotypical one.
Description
Pseudagkistrodon rudis appears to mimic vipers, and the head takes a triangular shape when the snake takes a defensive position.
The species grows to 120 cm (47 in) in total length. The head is broad and distinct from the neck. The dorsum is brown to grey brown, sometimes tinted with bronze, and interrupted by dark patterns of variable in size, disposition and intensity of pigmentation.
Female snakes give birth to 12–27 young per litter in late summer and autumn. The newly hatched young measure 13–20 cm (5.1–7.9 in) cm in total length.
Habitat and conservation
Pseudagkistrodon rudis is a common species that inhabits montane meadows, riparian areas of brooks, valleys, road sides, shrubs, and rock piles. Its altitudinal range is 600–2,650 m (1,970–8,690 ft) above sea level.
The species is traded in significant numbers, which might present a localized threat. However, the overall population of this widespread species is stable and its conservation status is assessed as "Least Concern".
References
- ^ Rao, D.-q.; Lau, M. & Zhou, Z. (2012). "Pseudagkistrodon rudis (formerly as: Rhabdophis rudis)". IUCN Red List of Threatened Species. 2012: e.T191933A2017330. doi:10.2305/IUCN.UK.2012-1.RLTS.T191933A2017330.en. Retrieved 21 April 2022.
- Pseudagkistrodon at the Reptarium.cz Reptile Database. Accessed 21 April 2022.
- ^ Pseudagkistrodon rudis at the Reptarium.cz Reptile Database. Accessed 21 April 2022.
- ^ Hans Breuer & William Christopher Murphy (2009–2010). "Macropisthodon rudis". Snakes of Taiwan. Archived from the original on 10 August 2011. Retrieved 7 March 2016.
- K. T. Shao. "Macropisthodon rudis Boulenger, 1906". Catalogue of life in Taiwan. Biodiversity Research Center, Academia Sinica, Taiwan. Retrieved 7 March 2016.
| Taxon identifiers | |
|---|---|
| Pseudagkistrodon | |
| Pseudagkistrodon rudis | |
| Macropisthodon rudis | |