Biology
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Extremely little is known about this rarely-seen species. Pregnant females have been found in March and they are known to share their roosts with other species, including Ridley's leaf-nosed bat (Hipposideros ridleyi). Catching this species for scientific work is difficult, but it is not clear whether this is due to low numbers, or to the bat's high level of agility in flight, making it possible to avoid traps at the last moment, where the momentum of other bats causes them to become entangled (2) (4).
The Malayan tailless leaf-nosed bat gives birth to a single pup each year, which it feeds milk and carries on foraging flights until the pup is 1-2 months old, when it is weaned and starts to forage alone (4).
Conservation
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Deforestation of primary forest for oil palm plantations, including within protected areas, is an issue of major concern and one that relies on both governmental action and consumer concern. Some large retailers have agreed, in collaboration with the WWF, to source products containing palm oil from plantations that are not on deforested land (5). Many scientific and charitable groups contribute to bat monitoring and local education programmes that can help to reduce persecution and raise awareness of the natural assets of the land (4).
Description
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This extraordinary-looking bat is small and delicate, with relatively large, rounded and ridge-free ears and a complex noseleaf, which together nearly mask the rest of the head. The noseleaf is formed mainly from two lobes, which are surrounded by several other projections and notches (3). The Malayan tailless leaf-nosed bat has short, broad wings with rounded tips and a large area of membrane above the forearm (known as the propatagium). This wing shape enables a large degree of manoeuvrability in flight, but limits the cruising speed of the bat. The long, soft fur ranges in colour from grey to dark brown, and is lightest on the underside (2) (4).
Habitat
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Occupying the lower levels of primary rainforest, the Malayan tailless leaf-nosed bat is thought to roost in large, hollow trees (2).
Range
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Found in Peninsular Malaysia, Borneo and the Philippines (2), as well as on Tarutua Island (Thailand) (5), and possibly Laos (1).
Status
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Classified as Vulnerable (VU) on the IUCN Red List (1).
Threats
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The rapid increase in land devoted to growing oil palm has resulted in extensive loss of primary forest. Together, Malaysia and Indonesia export 88% of the world's palm oil, for use in products such as margarine, lipstick and detergent. Deforestation continues at a steady rate for conversion to agricultural land and building communities, and despite the contribution of many bats in the control of insect crop pests, persecution of bats is also a threat (5).
Malayan tailless leaf-nosed bat
provided by wikipedia EN
The Malayan tailless leaf-nosed bat (Coelops robinsoni) is a species of bat in the family Hipposideridae. It is a very small bat which has long and soft fur. The fur coloration is brown to blackish on the dorsal surface and ashy on the ventral surface. It can be distinguished from the other roundleaf bats by its small size and the absence of the tail. It is listed as vulnerable by the IUCN (Heaney, 2008)
Biology
In Thailand, this species is known to form small colonies inhabiting caves and is considered a rare species (Lekagul & McNeely, 1977). In Peninsular Malaysia, the species has been recorded roosting in a cave and in the hollow buttress of a tree and shares its roosting site with Hipposideros ridleyi (Kingston et al. 2006; Francis, 2008).
In the Philippines, this species was previously known as C. hirsutus and recorded only from Mindoro Island (Nowak, 1994; Wilson & Reeder, 2005). However, Hill (1972) suggested that C. hirsutus was a conspecific species of C. robinsoni. Until now, the ecology and habitat preference is still poorly known, due mainly to the species being difficult to catch. Throughout its distribution it is not known whether the small number of specimens is due to low population numbers or it has a high level of trap and net avoidance due to a combination of flight pattern and sensitive echolocation.
Distributions
In Sarawak, it is only recorded from eastern part of Sarawak (Bintulu, Niah National Park and Gunung Mulu National Park) (Mohd Ridwan et al. 2010). The distribution of this bat is restricted to the Southeast Asian region from Peninsular Thailand, Peninsular Malaysia and Borneo and possibly to Philippines (Payne et al. 1985; Francis, 2008).
References
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Malayan tailless leaf-nosed bat: Brief Summary
provided by wikipedia EN
The Malayan tailless leaf-nosed bat (Coelops robinsoni) is a species of bat in the family Hipposideridae. It is a very small bat which has long and soft fur. The fur coloration is brown to blackish on the dorsal surface and ashy on the ventral surface. It can be distinguished from the other roundleaf bats by its small size and the absence of the tail. It is listed as vulnerable by the IUCN (Heaney, 2008)
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