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The diversity of bats worldwide includes large numbers of cryptic species, partly because divergence in acoustic traits such as echolocation calls are under stronger selection than differences in visual appearance in these nocturnal mammals. Island faunas often contain disproportionate numbers of endemic species, and hence we might expect cryptic, endemic species to be discovered relatively frequently in bats inhabiting islands. Species are best defined when multiple lines of evidence supports their diagnosis. Here we use morphometric, acoustic, and molecular phylogenetic data to show that a horseshoe bat in the Andaman Islands is distinct in all three aspects, supporting its status as a distinct species. We recommend investigation into possible new and endemic bat species on islands by using integrated approaches that provide independent lines of evidence for taxonomic distinctiveness. We provide a formal redescription of the taxon newly raised to species level, Rhinolophus andamanensis Dobson, 1872.

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Durga Das’s leaf-nosed bat Hipposideros durgadasi Khajuria, 1970 is endemic to India, and was known only from Katanga, Katangi, and Richhai villages, in Jabalpur district, Madhya Pradesh. During surveys conducted in Kolar district, Karnataka, India, we successfully mist-netted a few individuals belonging to the bicolor species group which, upon detailed external, craniodental and bacular studies were identified as Durga Das’s leaf-nosed bat. This paper reports the presence of this species in southern India, extending its distribution range by almost 1300 km. We also provide a detailed morphological description for this species.

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