Hipposideros dyacorum, Thomas, 1902

Don E. Wilson & Russell A. Mittermeier, 2019, Hipposideridae, Handbook of the Mammals of the World – Volume 9 Bats, Barcelona: Lynx Edicions, pp. 227-258 : 253-254

70.

Dayak Leaf-nosed Bat

Hipposideros dyacorum

French: Phyllorhine dayak / German: Dayak-Rundblattnase / Spanish: Hiposidérido dayak

Other common names: Dayak Roundleaf Bat

Taxonomy. Hipposiderus [sic] dyacorum Thomas, 1902 ,

“Mount Mulu, Baram District, Sarawak,” Borneo, Malaysia.

Hipposideros dyacorum was formerly included in the bicolor species group, but is now placed in the new tzter species group. Monotypic.

Distribution. Malay Peninsula and Borne©:-

Descriptive notes. Forearm 38—43 mm. Noseleaf of the Dayak Leaf-nosed Bat is small and rounded, without supplementary leaflet. Intemarial septum is swollen and broader at base, and narrow in middle. Pelage is uniformly dark brown, with slightly paler tips.

Habitat. Lowland rainforest to semi-evergreen forest.

Food and Feeding. The Dayak Leaf-nosed Bat feeds on small insects in forest understory.

Breeding. In peninsular Thailand, lactating females were captured in May-June.

Activity patterns. T he Dayak Leaf-nosed Bat roosts in limestone caves, under rocks, and in hollow trees. Call frequency of the F segment is 167-170 kHz.

Movements, Home range and Social organization. The Dayak Leaf-nosed Bat was caught in the same trap with Kunz’s Leaf-nosed Bats { H. kunzî ), Bicolored Leaf-nosed Bats { H. bicolor ), Bornean Leaf-nosed Bats { H. doriae ), and other forest-dwelling Murino. and Kerivoula.

Status and Conservation. Classified as Least Concern on TTze IUCNRed List. The major threat to the Dayak Leaf-nosed Bat is habitat loss.

Bibliography. Corbet & Hill (1992), Francis & Kingston (2008), Kingston et al. (2006), Payne et al. (1985), Phillipps & Phillipps (2016), 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. Malay Peninsula and Borne©:-