Bats of the Sangkulirang limestone karst formations, East Kalimantan - a priority region for Bornean bat conservation Author Suyanto, Agustinus Museum Zoologicum Bogoriense, Widyasatwaloka Building, Jl. Raya Bogor Km 46, Cibinong 16911, Indonesia Author Struebig, Matthew J. School of Biological and Chemical Sciences, Queen Mary, University of London, London, E 1 4 NS, United Kingdom & Corresponding author: E-mail: m. struebig @ qmul. ac. uk m.struebig@qmul.ac.uk text Acta Chiropterologica 2007 2007-04-01 9 1 67 95 journal article 21493 10.3161/1733-5329(2007)9[67:botslk]2.0.co;2 d40d94a8-75f5-486c-a377-6c1c7ba067dc 1733-5329 3944605 Myotis horsfieldii (Temminck, 1840) Horsfield’s myotis New material 5♂♂ ( MZB M26350 / 26726 / 26755 / 26832 / 26833 ); 5♀♀ ( MZB M26756 / 26760 / 26790 / 26800 / 26808 ). Records from Borneo Sabah : Danum Valley, Gomantong, Ma- dai, Sukau, Tepadong ( Payne et al ., 2000 ). Sarawak : Mulu NP, Niah NP ( Payne et al ., 2000 ). EastKal: Sungai Wain PF ( Struebig et al ., 2006 a ). Comments Eight individuals were captured in harp- traps set across old logging skids on the slopes of the Tabalar formation. This spe- cies is distinguished from most other Myotis by the wing membrane being attached at the side of the foot. It is known to roost in crevices and bell-holes in caves and is asso- ciated with large areas of water ( Payne et al. , 2000 ). These authors report M. hors- fieldii from most lowland areas in Sabah and Sarawak , and the SAMD regard this species as widely distributed over much of Borneo. However, apart from a further re- cord from Sungai Wain in 2005, as far as we are aware, the Tabalar records are the first report of this species occurring in Kali- mantan.