Pteralopex anceps


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Pteralopex anceps
Species Authority: K. Andersen, 1909
Common Name(s):
English Bougainville Monkey-faced Bat
Taxonomic Notes: Traditionally, a single species of Pteralopex was thought to occur in the Greater Bukida Islands, but there are actually two species here. Pteralopex anceps is a yellow-bellied, species that, unlike P. flanneryi, prefers upland habitats (Helgen 2005).

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(i,ii,iii,v) ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Helgen, K., Hamilton, S., Leary, T. & Bonaccorso, F.
Reviewer(s): Lamoreux, J. (Global Mammal Assessment Team), Racey, P.A., Medellín, R. & Hutson, A.M. (Chiroptera Red List Authority)
Listed as Endangered because its extent of occurrence is less than 5,000 km2, its distribution is severely fragmented, and there is continuing decline in: the extent of occurrence, area of occupancy, extent and quality of its habitat, and in the number of mature individuals. Furthermore, this species is completely reliant on mature forest and is found almost entirely in upland areas. The extent of occurrence used for assessment is based on upland areas.
1996 Critically Endangered

Geographic Range [top]

Range Description: This little-known species has been recorded from Bougainville (Papua New Guinea) and Choiseul (Solomon Islands) (Parnaby 2002; Helgen 2005; Pikacha 2008). The overall range is recorded as sea level to 1,900 m; most animals are found in the upland areas. The species might also occur on Ysabel, but this requires confirmation (Helgen 2005).
Papua New Guinea; Solomon Islands
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This is a rare species. While it has not been recorded since 1968 on Bougainville; the species was recorded from Choiseul in 1995 (Helgen 2005) and then again sometime between 2005-2006 (Pikacha 2008). The overall population has declined significantly since the 1960s. This species was not recorded over a three year period 2002-2005 in lowland areas of eastern Bougainville despite attempts to acquire information from residents of the area (S. Hamilton pers. comm.).
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: There is nothing known about the habitat requirements of this species. Flannery (1995) suggests that it is likely that it inhabits mature tropical forest (preferntially high elevation mossy forest).
Systems: Terrestrial

Threats [top]

Major Threat(s): This species is believed to have declined through the conversion of forests to agricultural land, and increased hunting pressure in parts of its range. It seems completely reliant on mature forest, primarily in upland areas. This species is sometimes hunted by burning the trees in which they roost (to smoke them out of hollows), thus capturing individuals and also destroying roost sites. Civil tensions in Bougainville from 1987 till 2000 likely resulted in an increase in hunting pressure (S. Hamilton pers. comm.).

Conservation Actions [top]

Conservation Actions: It is not known if the species is present in any protected areas. There is an urgent need to protect any remaining populations of this rare species.

Citation: Helgen, K., Hamilton, S., Leary, T. & Bonaccorso, F. 2008. Pteralopex anceps. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 28 August 2015.
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