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Philoganga montana

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA ARTHROPODA INSECTA ODONATA LESTOIDEIDAE

Scientific Name: Philoganga montana
Species Authority: (Hagen in Sélys, 1859)

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2009
Date Assessed: 2007-06-30
Assessor/s: Dow, R.A.
Reviewer/s: Kalkman, V. & Clausnitzer, V. (Odonata Red List Authority)
Justification:
Philoganga montana is likely to be at least locally common in mountainous areas of northeast India and Nepal, and possibly in parts of Myanmar, in Thailand it appears to be rare and on the edge of its range. However there are few records of this species, and the number of currently known locations is small, but too many to place the species in a high threat category. The species does not appear to be particularly threatened across much of its range at present, and its distribution is quite wide, accordingly it is listed as Least Concern, but with some reservations.

Geographic Range [top]

Range Description: Philoganga montana is known from northeast India (e.g. Fraser 1934, Prasad and Ghosh 1984, Lahiri 1987, Prasad and Varshney 1995, Mitra 1999), Nepal (e.g. Vick 1986, 1989; Kemp and Butler 2001) and Thailand (e.g. Hämäläinen and Pinratana 1999), and possibly from Bangladesh. Indian records are from Meghalaya and West Bengal. In Thailand it has only been found at three sites in Kanchanaburi (Hämäläinen 2007).
Countries:
Native:
India (Darjiling, Meghalaya); Nepal; Thailand
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This species may be moderately common in mountains in northeast India and in Nepal; it is difficult to judge this from the available information. Kemp and Butler (2001) found the species to be fairly common around the Phewa Tal lake in the Pokhara valley in central Nepal in May 2000. Lahiri (1987) states that, in Meghalaya it is “commonly found along montane streams overhanged with bushes”, but only lists four specimens from different locations, collected in the early 1970s. In Thailand it appears to be very scarce; there are three records, each of single individuals, from separate streams in Kanchanaburi (Hämäläinen 2007). Given the arboreal habits of the species (see Habitat and Ecology) it is likely to be under-recorded.
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: Most records of Philoganga montana are from mountain streams, but Kemp and Butler (2001) recorded the species from the Phewa Tal lake, observing reproductive behaviour and females ovipositing into the bark of trees overhanging the lake at up to 5 m above the shore; however they note that “the lake is essentially a regulated river controlled by a dam.” Adults were observed to “remain on or about trees in which all reproductive and oviposition behaviour takes place”.
Systems: Freshwater

Threats [top]

Major Threat(s): P. montana is experiencing habitat loss due to deforestation.

Conservation Actions [top]

Conservation Actions: There is a need for more data on this species, especially on its distribution. Searches should be made in northeast India and Myanmar. With more information planning of conservation measures (if needed) can take place.
Citation: Dow, R.A. 2009. Philoganga montana. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <www.iucnredlist.org>. Downloaded on 16 April 2014.
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