35. Sumban Leaf-nosed Bat Hipposideros sumbae French: Phyllorhine de Sumba I German: Sumba-Rundblattnase I Spanish: Hiposidérido de Samba Other common names: Sumba Roundleaf Bat Taxonomy. Hipposideros laruatus sumbae Oey, 1960, Sumba Island, Nusa Tenggara, Indonesia, from cave (c. 9°55’S, 120°41’E). Hipposideros sumbae is in the larvatus species group. This species was previously regarded as a subspecies of H. larvatus, but based on its smaller size it is currently considered a distinct species. Three subspecies recognized. Subspecies and Distribution. H s. sumbae Oey, 1960 — Sumba I 77. s. rotiensis Kitchener & Maryanto, 1993 -Roti and W Timor Is. . H. s. sumbawae Kitchener & Maryanto, 1993 -Sumbawa and Flores Is. Specimens from Savu and Semau Is have been included in this species but it is unknown to which subspecies they belong. Descriptive notes. Tail 24-32-5 mm, ear 19-1-23-8 mm, forearm 48-57 mm. Greatest skull lengths are 19-2—21-3 mm. The Sumban Leaf-nosed Bat is very similar to Horsfield’s Leaf-nosed Bat (77. Zaraztus), having three supplementary leaflets on each cheek and also fur color similar but slightly darker; however, its skull is generally smaller. Baculum is very short, somewhat ovoid in shape, with robust basal part and two short distal prongs. Habitat. The Sumban Leaf-nosed Bat is found in caves and under the roofs of houses, at low elevations (below 1000 m). Food and Feeding. The Sumban Leaf-nosed Bat is insectivorous. Breeding. No information. Activity patterns. Sumban Leaf-nosed Bats roost in caves. Movements, Home range and Social organization. The Sumban Leaf-nosed Bat is suggested to roost in large colonies. Status and Conservation. Classified as Least Concern on The IUCNRed List. The Sumban Leaf-nosed Bat is a locally common species. However, as a cave-dwelling bat, it might be at risk due to limestone mining, and quarrying. Bibliography. Hutson, Schütter & Suyanto (2008), Kitchener & Maryanto (1993), Simmons (2005).

Published as part of Don E. Wilson & Russell A. Mittermeier, 2019, Hipposideridae, pp. 227-258 in Handbook of the Mammals of the World – Volume 9 Bats, Barcelona :Lynx Edicions on page 240, DOI: 10.5281/zenodo.3739808