| Citation |
Dow, R.A. 2009. Cephalaeschna aritai. The IUCN Red List of Threatened Species 2009: e.T163659A5631536. http://dx.doi.org/10.2305/IUCN.UK.2009-2.RLTS.T163659A5631536.en. Downloaded on 16 May 2019. |
Description |
Geographic Range
NATIVE
Extant (resident)
Viet Nam
NUMBER OF LOCATIONS
UPPER DEPTH LIMIT
LOWER DEPTH LIMIT
Geographic Range in detail
ESTIMATED AREA OF OCCUPANCY (AOO) (KM²)
CONTINUING DECLINE IN AREA OF OCCUPANCY (AOO)
EXTREME FLUCTUATIONS IN AREA OF OCCUPANCY (AOO)
ESTIMATED EXTENT OF OCCURRENCE (EOO) (KM²)
CONTINUING DECLINE IN EXTENT OF OCCURRENCE (EOO)
EXTREME FLUCTUATIONS IN EXTENT OF OCCURRENCE (EOO)
CONTINUING DECLINE IN NUMBER OF LOCATIONS
EXTREME FLUCTUATIONS IN THE NUMBER OF LOCATIONS
RANGE DESCRIPTION
Known only from Viet Nam (Karube 2003, 2004). The type locality is given as Sapa, Lao Cai Province, north Viet Nam, however as the specimens were purchased from an insect dealer, there must be some doubt about this.
Population
CURRENT POPULATION TREND
Unknown
NUMBER OF MATURE INDIVIDUALS
POPULATION SEVERELY FRAGMENTED
Unknown
CONTINUING DECLINE OF MATURE INDIVIDUALS
Population in detail
EXTREME FLUCTUATIONS
NO. OF SUBPOPULATIONS
CONTINUING DECLINE IN SUBPOPULATIONS
EXTREME FLUCTUATIONS IN SUBPOPULATIONS
ALL INDIVIDUALS IN ONE SUBPOPULATION
NO. OF INDIVIDUALS IN LARGEST SUBPOPULATION
DESCRIPTION
Known from three specimens; one male and two females (Karube 2003).
Habitat and Ecology
SYSTEM
Freshwater (=Inland waters)
HABITAT TYPE
Wetlands (inland), Forest
GENERATION LENGTH (YEARS)
CONGREGATORY
MOVEMENT PATTERNS
CONTINUING DECLINE IN AREA, EXTENT AND/OR QUALITY OF HABITAT
Habitat and Ecology in detail
HABITAT AND ECOLOGY
The specimens which the species were described from were found in the collections of an insect dealer and lacked any date or habitat information. The altitude of Sapa is given by Karube (2003) as 1,500 - 2,000 m. The species is likely to breed in streams in montane forest.
CLASSIFICATION SCHEME
Habitats Suitability Major importance
1. Forest 1.9. Forest - Subtropical/Tropical Moist Montane Unknown
5. Wetlands (inland) 5.1. Wetlands (inland) - Permanent Rivers/Streams/Creeks (includes waterfalls) Unknown
Threats
Residential & commercial development
Housing & urban areas
Commercial & industrial areas
Threats in detail
THREATS
Habitat loss through human development of the area.
CLASSIFICATION SCHEME
Threats Timing Stresses Scope Severity Impact score Invasive species Virus
1. Residential & commercial development 1.1. Housing & urban areas Ongoing
1. Ecosystem stresses 1.1. Ecosystem conversion
1.2. Ecosystem degradation
Low Impact: 3
1.2. Commercial & industrial areas Ongoing
1. Ecosystem stresses 1.1. Ecosystem conversion
1.2. Ecosystem degradation |
