Nyctophilus timoriensis


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Nyctophilus timoriensis
Species Authority: (E. Geoffroy, 1806)
Common Name(s):
English Greater Long-eared Bat
Taxonomic Notes: The taxonomy of this species is under investigation and it is clear that several species are included within "timoriensis" (H. Parnaby pers. comm.). The taxon present on the island of Tasmania has often been shown within the geographic range of this species, but this is now considered to be a separate species (Nyctophilus sherrini). The population from eastern South Australia to New South Wales and southern Queensland is currently recognised as a separate conservation unit (listed as Vulnerable in Australia), which is presently under taxonomic analysis. The New Guinea taxon is likely to be a separate species (H. Parnaby pers. comm.). The population in far southwestern Australia is also morphologically distinct and may be considered a separate species in the future (N. McKenzie, H. Parnaby and T. Reardon pers. comm.).

Assessment Information [top]

Red List Category & Criteria: Data Deficient ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Hutson, T., Schlitter, D., Csorba, G., McKenzie, N., Reardon, T., Lumsden, L., Pennay, M., Ellis, M. & Parnaby, H.
Reviewer(s): Lamoreux, J. (Global Mammal Assessment Team), Racey, P.A., Medellín, R. & Hutson, A.M. (Chiroptera Red List Authority)
Listed as Data Deficient as it is very poorly known in the New Guinea region, and taxonomic revision of the taxon in Australia is not yet finalised. If the populations within Australia are split into three species, the eastern one is likely to be listed as Vulnerable A4c due to population reductions of over 30% in three generations inferred from past and predicted habitat loss. The central population is likely to be listed as Vulnerable A4c or possibly Near Threatened, due to population reductions of over 30% in three generations inferred from past and predicted habitat loss and degradation within the wheat belt and South Australia peninsula populations. The far western population is likely to be listed as Data Deficient, as much more information is needed on population trends. The populations outside Australia are clearly Data Deficient.
1996 Vulnerable

Geographic Range [top]

Range Description: This species has been recorded from Morobe and Western Provinces of Papua New Guinea on the island of New Guinea (Flannery 1995; Bonaccorso 1998). Records of this species from the island of Timor (Indonesia and East Timor) and Sudest (Papua New Guinea) are currently considered to be uncertain (Corbet and Hill 1992; Bonaccorso 1998). This species is also found in southern and eastern Australia (Western Australia, South Australia, Queensland, and New South Wales). In New South Wales, there is likely a break in its distribution where it crosses the Darling River around 30 S, 146 E (M. Ellis pers. comm.). It ranges from sea level to 1,600 m asl.
Australia; Papua New Guinea
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: In Australia, this species has a patchy distribution, often uncommon but sometimes locally common, and is known from only a few specimens in Papua New Guinea (Bonaccorso 1998).
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: In New Guinea, this species occurs in coastal sclerophyll woodlands and mid-montane forests. In Australia it is most commonly found in closed eucalypt woodland, but also occurs in open forest, savannas and mallee-type habitats in arid and semi-arid areas. In the south-east of Australia it occurs from semi-arid mallee and cypress country to iron-bark and mixed eucalyptus woodlands (L. Lumsden and M. Pennay pers. comm.). In the south-west of West Australia, it occurs in tall forest, in the goldfields of West Australia it is found in arid and open woodlands (N. McKenzie pers. comm.). It roosts in tree hollows and under bark. Females give birth to one or two young (Bonaccorso 1998; Duncan et al. 1999). In New South Wales, this species is restricted to only larger remnants (M. Pennay pers. comm.) and is most abundant in the extensive areas of structurally complex box-ironbark-cypress woodland on the western slopes and plains (Turbill and Ellis 2006). The generation length of this species is likely to be 4-5 years (L. Lumsden pers. comm.).
Systems: Terrestrial

Threats [top]

Major Threat(s): In Australia, it is threatened by loss of habitat through clearance of native vegetation for conversion to agricultural land. It may also be threatened by logging operations, grazing by livestock, and changes in fire regimes (Duncan et al. 1999). The threats to this species in Papua New Guinea are not known (Bonaccorso 1998). In the wheatbelt of West Australia, its preferred habitat has been almost completely cleared for agriculture and the remnants are, or will be, salinity affected (N. McKenzie pers. comm.).

Conservation Actions [top]

Conservation Actions: It has been recorded from many protected areas in Australia. Further studies are needed into the taxonomy, distribution, abundance, and threats to this species complex. Although logging continues, large reserves exist and restrictions are now imposed on clearing land in the far south-western part of the range of this species (N. McKenzie pers. comm.).

Citation: Hutson, T., Schlitter, D., Csorba, G., McKenzie, N., Reardon, T., Lumsden, L., Pennay, M., Ellis, M. & Parnaby, H. 2008. Nyctophilus timoriensis. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 01 September 2015.
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