Emballonuridae Author Bonaccorso, Frank text 2019 2019-10-31 Lynx Edicions Barcelona Editor Wilson, Don E. Editor Mittermeier, Russel A. Handbook of the Mammals of the World – Volume 9 Bats 350 373 book chapter 10.5281/zenodo.3740269 34e4a5a6-881c-4a1a-b64d-6868e12df7fb 978-84-16728-19-0 3740269 10 . Amhem Sheath-tailed Bat Taphozous kapalgensis French: Taphien de Kapalga I German: Arnhemland-Grabfledermaus I Spanish: Tafozo de Kapalga Other common names: ArnhemTomb Bat, White-striped Sheath-tailed Bat Taxonomy . Taphozous kapalgensis McKean & Friend, 1979 , “ ‘ Kapalga’, at the edge of the western flood plain of the South Alligator River, near Rookery Point , N.T. [= Northern Territory ] (lat. 12°32’S , long. 132 ° 23 ’E ),” Australia . Taphozous kapalgensis is in the subgenus Taphozous . Monotypic. Distribution. N Australia, in extreme E Kimberley region ofWestern Australia and in W Top End of the Northern Territory. Additional research might prove that it occurs further E across the Top End of the Northern Territory. Descriptive notes. Head-body 75-85 mm, tail 20-23 mm, ear 16-5-17-6 mm, hindfoot 7 - 6 - 8 -1 mm, forearm 57-6-63 mm; weight 26-29-5 g. The Amhem Sheath-tailed Bat has pale orange-brown pelage, with two white ventral flank-stripes. Uropatagium is naked except in sparsely haired anal region. Adult males have well-developed gular pouch, which is a rudimentary slit in females. Radio-metacarpal sacs are present . Habitat . Floodplains, swamps, mangroves, monsoon forests, and open woodlands dominated by Corymbia papuana ( Myrtaceae ) and Pandanus spiralis (Pandanaceae) . The Amhem Sheath-tailed Bat occurs in tropical stratified woodlands with mixtures of Eucalyptus tectifica, C. papuana , and C. clavigera (all Myrtaceae ). When foraging over floodplains, it typically flies 10—20 m aboveground. Food and Feeding . The Amhem Sheath-tailed Bat forages for insects above tree canopies, but it flies closer to the ground in open areas and flyway corridors that can include road cuts. It also will feed low over water. As it feeds, it flies rapidly with abrupt dives and twists while emitting loud, shrill echolocation calls. Breeding . No information. Activity patterns. The Amhem Sheath-tailed Bat is nocturnal, but its roosting habitats are unclear. Because it occurs for from rocky outcrops with caves and rock fissures, it likely roosts in tree hollows. Aboriginal people report that it roosts at the base of Pandanus leaves. Echolocation call frequencies are 22-9—25-5 kHz, with relatively short durations of 3—7 milliseconds. Movements, Home range and Social organization. No information. Status and Conservation . Classified as Least Concern on The IUCNRed List. Populations of the Amhem Sheath-tailed Bat are considered stable. It occurs in several protected areas including Kakadu National Park, Fogg Dam Conservation Reserve, and Point Stuart Coastal Reserve. Additional studies on distribution, abundance, roost selection, natural history, and threats are needed to better assess its status and need for conservation action. Potential threats include large-scale invasion of coastal floodplain by introduced plant species, degradation of habitats by feral Water Buffaloes (Bubalus bubalis), and saltwater intrusion on coastal plains causing loss of tree stands of Melaleuca (Myrtaceae) . Bibliography. Chimimba & Kitchener (1991), Lumsden et al. (2005), McKean & riend (1979), Milne & McKean (2008), Milne & Pavey (2011), Milne et al. (2003), Woinarski & Milne (2005).