Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Arthropoda Insecta Odonata Megapodagrionidae

Scientific Name: Rhinagrion hainanense
Species Authority: Wilson & Reels, 2001
Rhinagrion yokoii Sasamoto, 2003
Taxonomic Notes: Rhinagrion yokoii Sasamoto, 2003 is a junior synonym of this species (Kalkman and Villanueva 2011).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2011
Date Assessed: 2010-11-02
Assessor(s): Kalkman, V.J.
Reviewer(s): Dow, R.A. & Allen, D.J.
Contributor(s): Wilson, K.D.P.
The species has a wide distribution occurring in southwest China, Lao PDR and Viet Nam (Wilson and Reels 2001, Sasamoto 2003, Kalkman and Villanueva 2011). It seems generally to be uncommon and is expected to show a decline as its habitat, forest streams, are under pressure. It does however not match any of the criteria and the species is therefore assessed as Least Concern. The species was assessed as Vulnerable in 2009, but present information suggest more records are available showing that it has a far more extensive range.
Previously published Red List assessments:
2009 Vulnerable (VU)

Geographic Range [top]

Range Description:Wilson and Reels (2001) described the species from a single male collected from Lumu, Hainan in June 1999.

The species is currently known from China (Hainan (Fan Jia and Jiaxin, both in eastern Hainan; Graham Reels, unpub. data) and Guizhou Province), Lao PDR (as R. yokoii from Sekong in southeastern Lao PDR) and Viet Nam (Dak Lak Province, Thua Thien Hue Province and Khanh Hoa Province) (Kalkman and Villanueva 2011).

Countries occurrence:
China (Guizhou, Hainan); Lao People's Democratic Republic; Viet Nam
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:No information is known on the population size or trend.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:Rhinagrion congeners frequent forested streams. This species is reported from streams in subtropical and tropical moist montane forests.
Systems:Terrestrial; Freshwater

Threats [top]

Major Threat(s):

Specific threats to this species are currently unknown, although the habitat is thought to be declining.

Conservation Actions [top]

Conservation Actions:

At least some of the Hainan populations are within protected areas.

Classifications [top]

1. Forest -> 1.9. Forest - Subtropical/Tropical Moist Montane
suitability: Suitable  major importance:Yes
5. Wetlands (inland) -> 5.1. Wetlands (inland) - Permanent Rivers/Streams/Creeks (includes waterfalls)
suitability: Suitable  major importance:Yes

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Occur in at least one PA:Yes
In-Place Species Management
In-Place Education
2. Agriculture & aquaculture -> 2.3. Livestock farming & ranching -> 2.3.4. Scale Unknown/Unrecorded
♦ timing: Ongoing ♦ scope: Unknown ♦ severity: Unknown ⇒ Impact score: Unknown 
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

5. Biological resource use -> 5.3. Logging & wood harvesting -> 5.3.5. Motivation Unknown/Unrecorded
♦ timing: Ongoing ♦ scope: Unknown ♦ severity: Unknown ⇒ Impact score: Unknown 
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.3. Life history & ecology
1. Research -> 1.5. Threats

Bibliography [top]

IUCN. 2011. IUCN Red List of Threatened Species (ver. 2011.2). Available at: (Accessed: 10 November 2011).

Kalkman, V.J. and Villaneuva, R.J.T. 2011. A synopsis of the genus Rhinagrion with description of two new species from the Philippines (Odonata: Megapodagrionidae). International Journal of Odonatology 14: 11-31.

Sasamoto, A. 2003. Description of a Rhinagrion species from Laos (Megapodagrionidae; Zygoptera). Tombo 46: 17-19.

Wilson, K.D.P. and Reels, G.T. 2001. Odonata of Hainan, China. Odonatologica 30(2): 145-208.

Citation: Kalkman, V.J. 2011. Rhinagrion hainanense. In: The IUCN Red List of Threatened Species 2011: e.T168069A6457248. . Downloaded on 06 October 2015.
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