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Description |
Geographic Range [top]
Range Description: Known only from montane forest on Doi Inthanon in Chiang Mai, northwest Thailand (Hämäläinen 2003).
Countries occurrence:
Native:
Thailand
Additional data:
? Estimated area of occupancy (AOO) - km2: 1-499
? Lower elevation limit (metres): 1250
? Upper elevation limit (metres): 1600
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: A number of specimens have been collected on Doi Inthanon since 1980. Hämäläinen (2003) lists 12 specimens collected by T.W. Donnelly in 1980, plus 10 specimens collected by himself in 1998-1999. To this can be added at least one specimen from 2006 (Dow 2007). This is certainly a rather scarce species, but possibly locally common at times in suitable habitat on Doi Inthanon. Further sampling on Doi Inthanon, other high mountains in northern Thailand, and in adjacent regions in Myanmar and Lao PDR is needed to establish the extent of the distribution of this species.
Current Population Trend: Unknown
Additional data:
? Population severely fragmented: No
Habitat and Ecology [top]
Habitat and Ecology: Occurs on small streams in montane forest on Doi Inthanon.
Systems: Freshwater
Threats [top]
Major Threat(s): Habitat loss. The known habitats of this species are all within Doi Inthanon National Park, but see Hämäläinen (2004) for an account of conflicting interests and practices detrimental to odonate populations in national parks in Thailand.
Conservation Actions [top]
Conservation Actions: There is an urgent need for more data, especially on the distribution of this species. There appears to be a need for better management for invertebrate conservation in Doi Inthanon and other national parks in Thailand.
Citation: Dow, R.A. 2009. Caliphaea angka. The IUCN Red List of Threatened Species 2009: e.T163758A5647162. http://dx.doi.org/10.2305/IUCN.UK.2009-2.RLTS.T163758A5647162.en. Downloaded on 20 March 2019.
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