Hipposideros orbiculus, Francis, Kock & Habersetzer, 1999

Don E. Wilson & Russell A. Mittermeier, 2019, Hipposideridae, Handbook of the Mammals of the World – Volume 9 Bats, Barcelona: Lynx Edicions, pp. 227-258 : 257

83.

Orbiculus Leaf-nosed Bat

Hipposideros orbiculus

French: Phyllorhine à petit disque / German: Kleinblatt-Rundblattnase / Spanish: Hiposidérido de disco pequeno

Other common names: Orbiculus Roundleaf Bat

Taxonomy. Hipposideros orbiculus Francis, Kock & Habersetzer, 1999 ,

“Abai Siat, SE Kota Baru, 01°02’ S, 101°43’ E, Sumatera Barat, Sumatra, Indonesia.”

Hipposideros orbiculus was formerly included in the bicolor species group, but its position in the phylogeny is unclear and its taxonomy requires further study. Monotypic.

Distribution. Peninsular Malaysia and Sumatra.

Descriptive notes. Tail 26-34 mm, ear 20-23-5 mm, forearm 46-49 mm; weight 9-3-10-3 g. Ears of the Orbiculus Leaf-nosed Bat are large and rounded. Pelage is dark chocolate-brown. Noseleaf is broad and covers muzzle, with no lateral supplementary leaflet Intemarial septum is medium-sized and disk-shaped.

Habitat The Orbiculus Leaf-nosed Bat appears to be a lowland-forest species. It has been captured in rubber plantations, in primary forest, and in peat-swamp forest.

Food and Feeding. No information.

Breeding. No information.

Activity patterns. The Orbiculus Leaf-nosed Bat has been found roosting in drainage pipes. In Peninsular Malaysia, call frequency of 80 kHz has been recorded.

Movements, Home range and Social organization. No information.

Status and Conservation. Classified as Vulnerable on The IUCN Red List. The population status of the Orbiculus Leaf-nosed Bat is unknown, but is doubtless decreasing due to deforestation.

Bibliography. Francis (2008a), Francis, Bates et al. (2016), Francis, Kock & Habersetzer (1999), Simmons (2005).

Figures

67. Timor Leaf-nosed Bat (Hipposideros crumeniferus), 68. Bornean Leaf-nosed Bat (Hipposideros doriae), 69. Durga Das’s Leaf-nosed Bat (Hipposideros durgadasi), 70. Dayak Leaf-nosed Bat (Hipposideros dyacorum), 71. House-dwelling Leaf-nosed Bat (Hipposideros einnaythu), 72. Andersen’s Leaf-nosed Bat (Hipposideros gentilis), 73. Fulvus Leaf-nosed (Bat Hipposiderosfulvus), 74. Thailand Leaf-nosed Bat (Hipposideros halophyllus), 75. Kolar Leaf-nosed Bat (Hipposideros hypophyllus), 76. Phou Khao Khouay Leaf-nosed Bat (Hipposideros khaokhouayensis), 77. Kunz’s Leaf-nosed Bat (Hipposideros kunzi), 78. Big-eared Leaf-nosed Bat (Hipposideros macrobullotus), 79. Maggie Taylor’s Leaf-nosed Bat (Hipposideros maggietaylorae), 80. Malayan Leaf-nosed Bat (Hipposideros nequam), 81. Nicobar Leaf-nosed Bat (Hipposideros nicobarulae), 82. Philippine Forest Leaf-nosed Bat (Hipposideros obscurus), 83. Orbiculus Leaf-nosed Bat (Hipposideros orbiculus), 84. Biak Leaf-nosed Bat (Hipposideros papua), 85. Pomona Leaf-nosed Bat (Hipposideros pomona), 86. Philippine Pygmy Leaf-nosed Bat (Hipposideros pygmaeus), 87. Ridley’s Leaf-nosed Bat (Hipposideros ridleyi), 88. Laotian Leaf-nosed Bat (Hipposideros rotalis)

Distribution. Peninsular Malaysia and Sumatra.