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Description |
Geographic Range [top]
Range Description: Onychargia atrocyana is a very widely distributed species. Known from India and Bangladesh (e.g. Laidlaw 1914, Fraser 1933, Prasad and Varshney 1995), Sri Lanka (e.g. de Fonseka 2000), Nepal (e.g. Vick 1987), Mynamar (Fraser 1933), Thailand (e.g. Asahina 1966, Hämäläinen and Pinratana 1999), Peninsular Malaysia and Singapore (e.g. Laidlaw 1902, 1931; Orr 2005), Viet Nam (Asahina 1969), Hong Kong (e.g. Wilson 2004), Yunnan in China (K.D.P. Wilson pers. comm. 2007), Sumatra (e.g. Lieftinck 1935, 1954), Java (e.g. Lieftinck 1934, 1954), Borneo (e.g. Laidlaw 1920, Lieftinck 1953, Orr 2001), the Mentawei Islands, Lesser Sunda Islands, Belitung and Bangka (Lieftinck 1954) and the Philippines (Hämäläinen and Müller 1997). It is also likely to occur in Lao PDR and Cambodia and to be more widely distributed in China than current records suggest.
Countries occurrence:
Native:
Bangladesh; Brunei Darussalam; China (Yunnan); Hong Kong; India; Indonesia; Malaysia (Peninsular Malaysia, Sarawak); Myanmar; Nepal; Philippines; Singapore; Sri Lanka; Taiwan, Province of China; Thailand; Viet Nam
Additional data:
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: O. atrocyana is somewhat local in occurrence, but often very common where it occurs.
Current Population Trend: Unknown
Additional data:
? Population severely fragmented: No
Habitat and Ecology [top]
Habitat and Ecology: Breeds in ponds and marshes with trees, and swamp forest. This species can certainly survive in secondary habitats.
Systems: Freshwater
Threats [top]
Major Threat(s): There do not appear to be any major threats to this species, although habitat loss due to deforestation might be a problem in parts of its range.
Conservation Actions [top]
Conservation Actions: No particular conservation measures appear to be needed for this species at present, beyond the need for further research on distribution and population sizes.
Citation: Dow, R.A. 2009. Onychargia atrocyana. The IUCN Red List of Threatened Species 2009: e.T163675A5634099. http://dx.doi.org/10.2305/IUCN.UK.2009-2.RLTS.T163675A5634099.en. Downloaded on 22 September 2016.
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