Protobothrops trungkhanhensis


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Protobothrops trungkhanhensis
Species Authority: Orlov, Ryabov & Nguyen, 2009
Common Name(s):
English Trungkhanh Pit Viper

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii) ver 3.1
Year Published: 2012
Date Assessed: 2011-09-01
Assessor(s): Nguyen, T.Q.
Reviewer(s): Bowles, P. & Bauder, J.
Listed as Endangered on the basis that, although this snake is known from only two specimens, it is a member of a genus associated with sensitive limestone karst forest, and this forest is under pressure from logging and agricultural conversion at the single known location, resulting in a continuing decline in the extent and quality of this snake's habitat throughout its extent of occurrence of 615 km².

Geographic Range [top]

Range Description: This species is known only from the type locality, Trung Khanh Nature Reserve in Cao Bang province, Vietnam, at elevations of 500 and 700 m. The snake may occur in adjacent regions of China. Its estimated extent of occurrence is only 615 km².
Viet Nam
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This recently-described species is known from only two specimens.
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: This species inhabits evergreen and deciduous monsoon limestone tropical forest. It is closely associated with karst outcrops in this region. It is probably nocturnal; as no records were taken during the day. Snakes were found in the first half of September during the night excursions on karst under closed canopy (air temperature +22–24°C) (Orlov et al. 2009).
Systems: Terrestrial

Use and Trade [top]

Use and Trade: There is no information on use or trade in this recently-described snake.

Threats [top]

Major Threat(s): Karst forest around the type locality is being degraded as a result of illegal timber extraction, and slash-and-burn agriculture encroaching within the borders of the nature reserve (Q.T. Nguyen pers. comm. September 2011).

Conservation Actions [top]

Conservation Actions: This species is known only from a protected area, although there is degradation of forest within the reserve boundaries. No species-specific conservation measures are in place. Surveys are needed to obtain more information on the distribution, population status and natural history of this species, and to establish whether it is found in adjacent regions of both China and Vietnam.

Citation: Nguyen, T.Q. 2012. Protobothrops trungkhanhensis. The IUCN Red List of Threatened Species. Version 2014.2. <>. Downloaded on 02 September 2014.
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