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Macrogomphus lankanensis

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA ARTHROPODA INSECTA ODONATA GOMPHIDAE

Scientific Name: Macrogomphus lankanensis
Species Authority: Fraser, 1933
Taxonomic Notes: First described by Fraser (1933d).

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2009
Date Assessed: 2007-05-17
Assessor(s): Bedjani?, M.
Reviewer(s): Kalkman, V. & Clausnitzer, V. (Odonata Red List Authority)
Justification:
Apparently a rather local species. Recently known from only few localities (less than 10) in different parts of the island. Extent of occurrence is not so small but still estimated at less than 20,000 km², the area of occupancy is preliminary estimated at less than 2,000 km². Meets the criteria for Vulnerable based on its small range and number of localities and its suspected decline.  Additional exhaustive faunistic survey made by odonatologists and covering appropriate localities in different seasons is urgently needed.
History:
2006 Vulnerable (IUCN 2006)
2006 Vulnerable

Geographic Range [top]

Range Description: Sri Lanka. Apparently quite rare species. Known from only few localities, but in different parts of the island. Some individuals present in large odonatological collection made by National Museum of Natural History - Smithsonian Institution (USA) (accessed by M. Bedjanic between 2007-2009). Not found during the author's surveys in last years (1995, 2001, 2003).
Countries:
Native:
Sri Lanka
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Unknown size and trend; apparently small and fragmented.
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: The species inhabits rivers, bigger streams and occasionally also irrigation channels in lowlands and mid-hills. Larval form undescribed.
Systems: Freshwater

Threats [top]

Major Threat(s): Type of habitat seems not to be especially threatened. Pollution and other pressures on streams and rivers in the southwestern and central part of Sri Lanka are the major threat for the exceptionally rich endemic dragonfly fauna of the island.

Conservation Actions [top]

Conservation Actions:

Apart from the general conservation guidelines, no "site specific single-species-oriented" conservation measures can be proposed for the moment.  General guidelines for protection of rich endemic dragonfly fauna of Sri Lanka include (1) establishment of network of new small protected areas and corridors in the 'wet zone' (mountains and the southwestern part of the country), (2) conservation of forest corridors along streams and rivulets outside protected areas in the wet zone and (3) effective execution of appropriate nature conservation measures in partly damaged declared protected areas (Bedjanic 2004).


Citation: Bedjani?, M. 2009. Macrogomphus lankanensis. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 24 October 2014.
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