Rhinolophus pusillus Temminck, 1834 Least horseshoe bat Rhinolophus pusillus Temminck, 1834: 29; Java, Indonesia. Distribution India; Nepal; Thailand; Myanmar; Lao PDR; S China; Peninsular Malaysia; Mentawi Islands, Java and Lesser Sunda Islands (Indonesia), small adjacent islands. Distribution in Lao PDR (Fig. 24): Attapu Province: Ban Paam, Dong Ampham NBCA (IEX/ROM/SMF collections); Houay Pha Camp, Xe Kaman, Dong Ampham NBCA (IEX/SMF collections); Near Hua Tat Poi, Upper Xe Kaman, Dong Ampham NBCA (ROM/SMF collections); Xe Kaman River proposed dam site, Dong Ampham NBCA (SMF collection); Bolikhamxai Province: Tak Leuk (Tad Leuk), Phou Khaokhoay NBCA (IEX /ROM collections); limestone near Lak Sao (Ban Lak-20) (ROM collection); Dan Phorkeng (Dan Phokeng), Phou Khaokhoay NBCA; Mungkon Cave (Tham Moungkon) (ROM/SMF collection); Ban Kengbit, Nam Kading NBCA; Nam Pan (SMF collection); Champasak Province: Nong Luang (Nong Louang) (HNHM collection); Ban Nam-On (Ban Nam-Om), Dong Hua Sao NBCA; Ban Sounot, Dong Hua Sao NBCA (ROM collection); Nong Lom, Bolaven Plateau (SMF collection); Dong Hua Sao NBCA (CMF field record); Houaphan Province: Ban Buaphath, Nam Et NBCA (EBD collection); Nam Ngom (Houay Ngom), Nam Et NBCA (ROM collection); Khammouan Province: Tam Houay Si (Tham Houaysy); Tam Jongchott (Tham Chongchot) (Robinson and Webber, 2000); Ban Xam-Kang, Hin Namno NBCA (ROM collection); Ban Khankeo, Khammouan Limestone NBCA (SMF collection); Louangnamtha Province: Ban Namya (IEX collection); Ban Phoulan (ROM collection); Louangphabang Province: Ban Sakok, Nam Et NBCA (EBD collection); Nam Khan, Nam Et NBCA (EBD/ROM collections); Vientiane Province: Nam Ngum (Bergmans, 1995); Ban Nampe; Ban Nathao; Phou Khaokhoay Dam Site (ROM collection); Danpapor (Dan Papo), Phou Khaokhoay NBCA; Danyai (Dan Gnai), Phou Khaokhoay NBCA (CMF field record). Taxonomic notes Morphologically and genetically, specimens referred to R. pusillus from Lao PDR appear to represent multiple species (Francis et al., 2010). Further taxonomic work is required to determine the number of species and appropriate names for each, including whether any of them represent R. convexus or other recognized species.

Published as part of Thomas, Nikky M., Duckworth, J. W., Douangboubpha, Bounsavane, Williams, Meredith & Francis, Charles M., 2013, A checklist of bats (Mammalia: Chiroptera) from Lao PDR, pp. 193-260 in Acta Chiropterologica 15 (1) on pages 207-208, DOI: 10.3161/150811013X667993, http://zenodo.org/record/3943341